U.S. patent application number 16/290702 was filed with the patent office on 2019-06-27 for organic electroluminescence device and novel compound.
This patent application is currently assigned to IDEMITSU KOSAN CO., LTD.. The applicant listed for this patent is IDEMITSU KOSAN CO., LTD.. Invention is credited to Hidetsugu IKEDA, Yuki NAKANO, Keita SEDA, Ryota TAKAHASHI.
Application Number | 20190194215 16/290702 |
Document ID | / |
Family ID | 65898613 |
Filed Date | 2019-06-27 |
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United States Patent
Application |
20190194215 |
Kind Code |
A1 |
TAKAHASHI; Ryota ; et
al. |
June 27, 2019 |
ORGANIC ELECTROLUMINESCENCE DEVICE AND NOVEL COMPOUND
Abstract
To provide an organic electroluminescence device having a high
luminous efficiency and a novel compound that can be used as a
material for an organic electroluminescence device having a high
luminous efficiency. A compound represented by the following
formula (1) or (2): ##STR00001## wherein in the formulas (1) and
(2), one or more pairs of adjacent two or more of R.sub.1 to
R.sub.7 and R.sub.10 to R.sub.16 may form a substituted or
unsubstituted, saturated or unsaturated ring; R.sub.17, and R.sub.1
to R.sub.7 and R.sub.10 to R.sub.16 that do not form the
substituted or unsubstituted, saturated or unsaturated ring are
independently a hydrogen atom, a substituted or unsubstituted aryl
group including 6 to 20 ring carbon atoms or a substituted or
unsubstituted monovalent heterocyclic group including 5 to 20 ring
atoms; two R.sub.17s may be the same or different; and Ar.sub.1 to
Ar.sub.4 are independently a substituted or unsubstituted aryl
group including 6 to 20 ring carbon atoms.
Inventors: |
TAKAHASHI; Ryota;
(Sodegaura-shi, Chiba, JP) ; IKEDA; Hidetsugu;
(Sodegaura-shi, Chiba, JP) ; SEDA; Keita;
(Sodegaura-shi, Chiba, JP) ; NAKANO; Yuki;
(Sodegaura-shi, Chiba, JP) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
IDEMITSU KOSAN CO., LTD. |
Tokyo |
|
JP |
|
|
Assignee: |
IDEMITSU KOSAN CO., LTD.
Tokyo
JP
|
Family ID: |
65898613 |
Appl. No.: |
16/290702 |
Filed: |
March 1, 2019 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
|
|
16201984 |
Nov 27, 2018 |
|
|
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16290702 |
|
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Current U.S.
Class: |
1/1 |
Current CPC
Class: |
C07D 487/22 20130101;
H01L 2251/301 20130101; H01L 2251/558 20130101; H01L 51/001
20130101; H01L 51/0072 20130101; H01L 51/0073 20130101; H01L
51/5012 20130101; H01L 51/5092 20130101; H01L 51/5056 20130101;
H01L 51/5088 20130101; H01L 51/5016 20130101; H01L 51/5206
20130101; C09K 2211/1007 20130101; H01L 51/5072 20130101; H01L
51/0058 20130101; C07D 491/22 20130101; C09K 2211/1018 20130101;
H01L 51/0061 20130101; H01L 51/5221 20130101; H01L 51/006 20130101;
H01L 51/56 20130101; H01L 51/0074 20130101; H01L 51/0052 20130101;
C09K 11/06 20130101; H01L 2251/308 20130101 |
International
Class: |
C07D 487/22 20060101
C07D487/22; C07D 491/22 20060101 C07D491/22; H01L 51/00 20060101
H01L051/00; H01L 51/50 20060101 H01L051/50 |
Foreign Application Data
Date |
Code |
Application Number |
Dec 6, 2017 |
JP |
2017-234331 |
Jun 15, 2018 |
JP |
2018-114580 |
Claims
1. A compound represented by the following formula (3-I):
##STR00420## wherein in the formula (3-I), one or more pairs of
adjacent two or more of R.sub.1 to R.sub.7 and R.sub.10 to R.sub.16
may form a substituted or unsubstituted, saturated or unsaturated
ring; R.sub.1 to R.sub.7 and R.sub.10 to R.sub.16 that do not form
the substituted or unsubstituted, saturated or unsaturated ring are
independently a hydrogen atom, a substituted or unsubstituted alkyl
group including 1 to 50 carbon atoms, a substituted or
unsubstituted haloalkyl group including 1 to 50 carbon atoms, a
substituted or unsubstituted alkenyl group including 2 to 50 carbon
atoms, a substituted or unsubstituted alkynyl group including 2 to
50 carbon atoms, a substituted or unsubstituted cycloalkyl group
including 3 to 50 ring carbon atoms, a substituted or unsubstituted
alkoxy group including 1 to 50 carbon atoms, a substituted or
unsubstituted alkylthio group including 1 to 50 carbon atoms, a
substituted or unsubstituted aryloxy group including 6 to 50 ring
carbon atoms, a substituted or unsubstituted arylthio group
including 6 to 50 ring carbon atoms, a substituted or unsubstituted
aralkyl group including 7 to 50 carbon atoms,
--Si(R.sub.31)(R.sub.32)(R.sub.33), --C(.dbd.O)R.sub.34,
--COOR.sub.36, --N(R.sub.36)(R.sub.37), a halogen atom, a cyano
group, a nitro group, a substituted or unsubstituted aryl group
including 6 to 50 ring carbon atoms or a substituted or
unsubstituted monovalent heterocyclic group including 5 to 50 ring
atoms, provided that one couple selected from R.sub.2 and R.sub.11,
R.sub.4 and R.sub.13, and R.sub.5 and R.sub.14 are both
--N(R.sub.36)(R.sub.37); R.sub.17 is a hydrogen atom, a substituted
or unsubstituted alkyl group including 1 to 50 carbon atoms, a
substituted or unsubstituted haloalkyl group including 1 to 50
carbon atoms, a substituted or unsubstituted alkenyl group
including 2 to 50 carbon atoms, a substituted or unsubstituted
alkynyl group including 2 to 50 carbon atoms, a substituted or
unsubstituted cycloalkyl group including 3 to 50 ring carbon atoms,
a substituted or unsubstituted alkoxy group including 1 to 50
carbon atoms, a substituted or unsubstituted alkylthio group
including 1 to 50 carbon atoms, a substituted or unsubstituted
aryloxy group including 6 to 50 ring carbon atoms, a substituted or
unsubstituted arylthio group including 6 to 50 ring carbon atoms, a
substituted or unsubstituted aralkyl group including 7 to 50 carbon
atoms, --Si(R.sub.31)(R.sub.32)(R.sub.33), --C(.dbd.O)R.sub.34,
--COOR.sub.35, --N(R.sub.36)(R.sub.37), a halogen atom, a cyano
group, a nitro group, a substituted or unsubstituted aryl group
including 6 to 50 ring carbon atoms or a substituted or
unsubstituted monovalent heterocyclic group including 5 to 50 ring
atoms; two R.sub.17s may be the same or different; R.sub.31 to
R.sub.35 are independently a hydrogen atom, a substituted or
unsubstituted alkyl group including 1 to 50 carbon atoms, a
substituted or unsubstituted cycloalkyl group including 3 to 50
ring carbon atoms, a substituted or unsubstituted aryl group
including 6 to 50 ring carbon atoms or a substituted or
unsubstituted monovalent heterocyclic group including 5 to 50 ring
atoms; R.sub.36 and R.sub.37 are independently a substituted or
unsubstituted aryl group including 6 to 50 ring carbon atoms or a
substituted or unsubstituted monovalent heterocyclic group
including 5 to 50 ring atoms, provided that at least one of
R.sub.36 and R.sub.37 is a substituted or unsubstituted monovalent
heterocyclic group including 5 to 50 ring atoms; when each of
R.sub.31 to R.sub.37 is present in plural, each of the plural
R.sub.31s to R.sub.37s may be the same or different.
2. A compound according to claim 1, wherein one of R.sub.36 and
R.sub.37 is a substituted or unsubstituted aryl group including 6
to 50 ring carbon atoms and the other of R.sub.36 and R.sub.37 is a
substituted or unsubstituted monovalent heterocyclic group
including 5 to 50 ring atoms.
3. A compound according to claim 1, wherein at least one of
R.sub.36 and R.sub.37 is a substituted or unsubstituted
dibenzofuranyl group, a substituted or unsubstituted
dibenzothiophenyl group, a substituted or unsubstituted carbazolyl
group, or a substituted or unsubstituted indolocarbazolyl
group.
4. A compound according to claim 1, wherein at least one of
R.sub.36 and R.sub.37 is a substituted or unsubstituted
dibenzofuranyl group.
5. A compound according to claim 1, wherein R.sub.1 to R.sub.7 and
R.sub.10 to R.sub.16 are hydrogen atoms.
6. A compound according to claim 1, wherein the substituent in the
"substituted or unsubstituted" is selected from the group
consisting of an alkyl group including 1 to 50 carbon atoms, an
aryl group including 6 to 50 ring carbon atoms and a monovalent
heterocyclic group including 5 to 50 ring atoms.
7. A compound according to claim 1, wherein the substituent in the
"substituted or unsubstituted" is selected from the group
consisting of an alkyl group including 1 to 18 carbon atoms, an
aryl group including 6 to 18 ring carbon atoms and a monovalent
heterocyclic group including 5 to 18 ring atoms.
8. A compound according to claim 1, wherein two R.sub.17s are a
hydrogen atom.
9. A compound according to claim 1, wherein two R.sub.17s are
independently a substituted or unsubstituted aryl group including 6
to 50 ring carbon atoms.
10. A compound according to claim 1, wherein two R.sub.17s are
independently a substituted or unsubstituted phenyl group.
11. An organic electroluminescence device comprising: a cathode, an
anode, and at least one organic layer disposed between the cathode
and the anode, wherein at least one layer of the at least one
organic layer comprises a compound represented by the following
formula (3-I): ##STR00421## wherein in the formula (3-I), one or
more pairs of adjacent two or more of R.sub.1 to R.sub.7 and
R.sub.10 to R.sub.16 may form a substituted or unsubstituted,
saturated or unsaturated ring; R.sub.1 to R.sub.7 and R.sub.10 to
R.sub.16 that do not form the substituted or unsubstituted,
saturated or unsaturated ring are independently a hydrogen atom, a
substituted or unsubstituted alkyl group including 1 to 50 carbon
atoms, a substituted or unsubstituted haloalkyl group including 1
to 50 carbon atoms, a substituted or unsubstituted alkenyl group
including 2 to 50 carbon atoms, a substituted or unsubstituted
alkynyl group including 2 to 50 carbon atoms, a substituted or
unsubstituted cycloalkyl group including 3 to 50 ring carbon atoms,
a substituted or unsubstituted alkoxy group including 1 to 50
carbon atoms, a substituted or unsubstituted alkylthio group
including 1 to 50 carbon atoms, a substituted or unsubstituted
aryloxy group including 6 to 50 ring carbon atoms, a substituted or
unsubstituted arylthio group including 6 to 50 ring carbon atoms, a
substituted or unsubstituted aralkyl group including 7 to 50 carbon
atoms, --Si(R.sub.31)(R.sub.32)(R.sub.33), --C(.dbd.O)R.sub.34,
--COOR.sub.35, --N(R.sub.36)(R.sub.37), a halogen atom, a cyano
group, a nitro group, a substituted or unsubstituted aryl group
including 6 to 50 ring carbon atoms or a substituted or
unsubstituted monovalent heterocyclic group including 5 to 50 ring
atoms, provided that one couple selected from R.sub.2 and R.sub.11,
R.sub.4 and R.sub.13, and R.sub.5 and R.sub.14 are both
--N(R.sub.36)(R.sub.37); R.sub.17 is a hydrogen atom, a substituted
or unsubstituted alkyl group including 1 to 50 carbon atoms, a
substituted or unsubstituted haloalkyl group including 1 to 50
carbon atoms, a substituted or unsubstituted alkenyl group
including 2 to 50 carbon atoms, a substituted or unsubstituted
alkynyl group including 2 to 50 carbon atoms, a substituted or
unsubstituted cycloalkyl group including 3 to 50 ring carbon atoms,
a substituted or unsubstituted alkoxy group including 1 to 50
carbon atoms, a substituted or unsubstituted alkylthio group
including 1 to 50 carbon atoms, a substituted or unsubstituted
aryloxy group including 6 to 50 ring carbon atoms, a substituted or
unsubstituted arylthio group including 6 to 50 ring carbon atoms, a
substituted or unsubstituted aralkyl group including 7 to 50 carbon
atoms, --Si(R.sub.31)(R.sub.32)(R.sub.33), --C(.dbd.O)R.sub.34,
--COOR.sub.35, --N(R.sub.36)(R.sub.37), a halogen atom, a cyano
group, a nitro group, a substituted or unsubstituted aryl group
including 6 to 50 ring carbon atoms or a substituted or
unsubstituted monovalent heterocyclic group including 5 to 50 ring
atoms; two R.sub.17s may be the same or different; R.sub.31 to
R.sub.35 are independently a hydrogen atom, a substituted or
unsubstituted alkyl group including 1 to 50 carbon atoms, a
substituted or unsubstituted cycloalkyl group including 3 to 50
ring carbon atoms, a substituted or unsubstituted aryl group
including 6 to 50 ring carbon atoms or a substituted or
unsubstituted monovalent heterocyclic group including 5 to 50 ring
atoms; R.sub.36 and R.sub.37 are independently a substituted or
unsubstituted aryl group including 6 to 50 ring carbon atoms or a
substituted or unsubstituted monovalent heterocyclic group
including 5 to 50 ring atoms, provided that at least one of
R.sub.36 and R.sub.37 is a substituted or unsubstituted monovalent
heterocyclic group including 5 to 50 ring atoms; when each of
R.sub.31 to R.sub.37 is present in plural, each of the plural
R.sub.31s to R.sub.37s may be the same or different.
12. An organic electroluminescence device according to claim 11,
wherein one of R.sub.36 and R.sub.37 is a substituted or
unsubstituted aryl group including 6 to 50 ring carbon atoms and
the other of R.sub.36 and R.sub.37 is a substituted or
unsubstituted monovalent heterocyclic group including 5 to 50 ring
atoms.
13. An organic electroluminescence device according to claim 11,
wherein at least one of R.sub.36 and R.sub.37 is a substituted or
unsubstituted dibenzofuranyl group, a substituted or unsubstituted
dibenzothiophenyl group, a substituted or unsubstituted carbazolyl
group, or a substituted or unsubstituted indolocarbazolyl
group.
14. An organic electroluminescence device according to claim 11,
wherein at least one of R.sub.36 and R.sub.37 is a substituted or
unsubstituted dibenzofuranyl group.
15. An organic electroluminescence device according to claim 11,
wherein R.sub.1 to R.sub.7 and R.sub.10 to R.sub.16 are hydrogen
atoms.
16. An organic electroluminescence device according to claim 11,
wherein the substituent in the "substituted or unsubstituted" is
selected from the group consisting of an alkyl group including 1 to
50 carbon atoms, an aryl group including 6 to 50 ring carbon atoms
and a monovalent heterocyclic group including 5 to 50 ring
atoms.
17. An organic electroluminescence device according to claim 11,
wherein the substituent in the "substituted or unsubstituted" is
selected from the group consisting of an alkyl group including 1 to
18 carbon atoms, an aryl group including 6 to 18 ring carbon atoms
and a monovalent heterocyclic group including 5 to 18 ring
atoms.
18. An organic electroluminescence device according to claim 11,
wherein two R.sub.17s are a hydrogen atom.
19. An organic electroluminescence device according to claim 11,
wherein two R.sub.17s are independently a substituted or
unsubstituted aryl group including 6 to 50 ring carbon atoms.
20. An organic electroluminescence device according to claim 11,
wherein two R.sub.17s are independently a substituted or
unsubstituted phenyl group.
21. An organic electroluminescence device according to claim 11,
wherein the at least one layer of the at least one organic layer is
an emitting layer.
22. An electronic apparatus provided with the organic
electroluminescence device according to claim 11.
Description
CROSS-REFERENCE TO RELATED APPLICATIONS
[0001] The present application is a continuation of U.S.
application Ser. No. 16/201,984 filed on Nov. 27, 2018, which
claims priority to Japanese Patent Application No. 2018-114580
filed on Jun. 15, 2018, and Japanese Patent Application No. filed
on 2017-234331 filed on Dec. 6, 2017. These applications are hereby
incorporated by reference in their entireties.
TECHNICAL FIELD
[0002] The invention relates to an organic electroluminescence
device and a novel compound.
BACKGROUND ART
[0003] When a voltage is applied to an organic electroluminescence
device (hereinafter may be referred to as an organic EL device),
holes are injected to an emitting layer from an anode and electrons
are injected to an emitting layer from a cathode. In the emitting
layer, injected holes and electrons are re-combined and excitons
are formed.
[0004] An organic EL device comprises an emitting layer between the
anode and the cathode. Further, there may be a case where it has a
stacked layer structure comprising an organic layer such as a
hole-injecting layer, a hole-transporting layer, an
electron-injecting layer, an electron-transporting layer, etc.
[0005] Patent Documents 1 to 3 disclose a compound used as a
material for an organic electroluminescence device.
RELATED ART DOCUMENTS
Patent Documents
[0006] Patent Document 1: WO2013/077344 [0007] Patent Document 2:
U.S. Pat. No. 5,843,607 [0008] Patent Document 3: WO2017/175690
SUMMARY OF THE INVENTION
Problems to be Solved by the Invention
[0009] An object of the invention is to provide an organic
electroluminescence device having a high luminous efficiency and a
novel compound that can be used as a material for an organic
electroluminescence device having a high luminous efficiency.
Means for Solving the Problems
[0010] According to one aspect of the invention, a compound
represented by the following formula (1) or (2) is provided.
##STR00002##
[0011] wherein in the formulas (1) and (2),
[0012] one or more pairs of adjacent two or more of R.sub.1 to
R.sub.7 and R.sub.10 to R.sub.16 may form a substituted or
unsubstituted, saturated or unsaturated ring;
[0013] R.sub.17, and R.sub.1 to R.sub.7 and R.sub.10 to R.sub.16
that do not form the substituted or unsubstituted, saturated or
unsaturated ring are independently a hydrogen atom, a substituted
or unsubstituted aryl group including 6 to 20 ring carbon atoms or
a substituted or unsubstituted monovalent heterocyclic group
including 5 to 20 ring atoms;
[0014] two R.sub.17s may be the same or different; and
[0015] Ar.sub.1 to Ar.sub.4 are independently a substituted or
unsubstituted aryl group including 6 to 20 ring carbon atoms.
[0016] According to one aspect of the invention, the following
organic electroluminescence device is provided:
[0017] An organic electroluminescence device comprising:
[0018] a cathode,
[0019] an anode, and
[0020] at least one organic layer disposed between the cathode and
the anode, wherein
[0021] at least one layer of the at least one organic layer
comprises a compound represented by the following formula (1) or
(2):
##STR00003##
[0022] wherein in the formulas (1) and (2),
[0023] one or more pairs of adjacent two or more of R.sub.1 to
R.sub.7 and R.sub.10 to R.sub.16 may form a substituted or
unsubstituted, saturated or unsaturated ring;
[0024] R.sub.17, and R.sub.1 to R.sub.7 and R.sub.10 to R.sub.16
that do not form the substituted or unsubstituted, saturated or
unsaturated ring are independently a hydrogen atom, a substituted
or unsubstituted aryl group including 6 to 20 ring carbon atoms or
a substituted or unsubstituted monovalent heterocyclic group
including 5 to 20 ring atoms;
[0025] two R.sub.17s may be the same or different; and
[0026] Ar.sub.1 to Ar.sub.4 are independently a substituted or
unsubstituted aryl group including 6 to 20 ring carbon atoms.
[0027] According to one aspect of the invention, an electronic
apparatus provided with the organic electroluminescence device is
provided.
Advantageous Effects of the Invention
[0028] According to the invention, an organic electroluminescence
device having a high luminous efficiency and a novel compound that
can be used as a material for an organic electroluminescence device
having a high luminous efficiency can be provided.
BRIEF DESCRIPTION OF THE DRAWINGS
[0029] FIG. 1 is a view showing a schematic configuration of one
embodiment of the organic EL device of the invention, and
[0030] FIG. 2 is a view showing a schematic configuration of
another embodiment of the organic EL device of the invention.
MODE FOR CARRYING OUT THE INVENTION
[0031] In the present specification, a hydrogen atom includes
isomers differing in number of neutrons, i.e. protium, deuterium
and tritium.
[0032] In the present specification, the number of "ring carbon
atoms" means the number of carbon atoms among atoms constituting a
ring itself of a compound in which atoms are bonded in the form of
a ring (for example, a monocyclic compound, a fused ring compound,
a cross-linked compound, a carbocyclic compound or a heterocyclic
compound). When the ring is substituted by a substituent, the
carbon contained in the substituent is not included in the number
of ring carbon atoms. The same is applied to the "ring carbon
atoms" mentioned below, unless otherwise indicated. For example, a
benzene ring includes 6 ring carbon atoms, a naphthalene ring
includes 10 ring carbon atoms, a pyridinyl group includes 5 ring
carbon atoms, and a furanyl group includes 4 ring carbon atoms.
When a benzene ring or a naphthalene ring is substituted by an
alkyl group as a substituent, for example, the number of carbon
atoms of the alkyl group is not included in the number of ring
carbon atoms. When a fluorene ring is bonded with a fluorene ring
as a substituent (including a spirofluorene ring), for example, the
number of carbon atoms of the fluorene ring as the substituent is
not included in the number of ring carbon atoms.
[0033] In the present specification, the number of "ring atoms"
means the number of atoms constituting a ring itself of a compound
having a structure in which atoms are bonded in the form of a ring
(for example, monocycle, fused ring, ring assembly) (for example, a
monocyclic compound, a fused ring compound, a cross-linked
compound, a carbocyclic compound or a heterocyclic compound). It
does not include atoms which do not form a ring (for example, a
hydrogen atom which terminates the atomic bonding constituting a
ring) or atoms contained in a substituent when the ring is
substituted by the substituent. The same is applied to the "ring
atoms" mentioned below, unless otherwise indicated. For example, a
pyridine ring includes 6 ring atoms, a quinazoline ring includes 10
ring atoms, and a furan ring includes 5 ring atoms. Hydrogen atoms
respectively bonded with a carbon atom of a pyridine ring or a
quinazoline ring or atoms constituting a substituent are not
included in the number of ring atoms. When a fluorene ring is
bonded with a fluorene ring as a substituent (including a
spirofluorene ring), for example, the number of atoms of the
fluorene ring as a substituent is not included in the number of
ring atoms.
[0034] In the present specification, the "XX to YY carbon atoms" in
the "substituted or unsubstituted ZZ group including XX to YY
carbon atoms" means the number of carbon atoms when the ZZ group is
unsubstituted. The number of carbon atoms of a substituent when the
group is substituted is not included. Here, "YY" is larger than
"XX", and "XX" and "YY" independently mean an integer of 1 or
more.
[0035] In the present specification, the "XX to YY atoms" in the
"substituted or unsubstituted ZZ group including XX to YY atoms"
means the number of atoms when the ZZ group is unsubstituted. The
number of atoms of a substituent when the group is substituted is
not included. Here, "YY" is larger than "XX", and "XX" and "YY"
independently mean an integer of 1 or more.
[0036] In the present specification, the "unsubstituted" in the
"substituted or unsubstituted" means bonding of a hydrogen atom,
not substitution by the substituent mentioned above.
[0037] As specific examples of each substituent in the present
specification, the following can be given.
[0038] As the unsubstituted alkyl group including 1 to 50
(preferably 1 to 30, more preferably 1 to 18, and further
preferably 1 to 5) carbon atoms, a methyl group, an ethyl group, a
propyl group, an isopropyl group, an n-butyl group, a s-butyl
group, an isobutyl group, a t-butyl group, an n-pentyl group, an
n-hexyl group, an n-octyl group or the like can be given, for
example.
[0039] As the substituted alkyl group including 1 to 50 (preferably
1 to 30, more preferably 1 to 18, and further preferably 1 to 5)
carbon atoms, a hydroxymethyl group, a 1-hydroxyethyl group, a
2-hydroxyethyl group, a 2-hydroxyisobutyl group, a
1,2-dihydroxyethyl group, a 1,3-dihydroxyisopropyl group, a
2,3-dihydroxy-t-butyl group, a 1,2,3-trihydroxypropyl group, a
chloromethyl group, a 1-chloroethyl group, a 2-chloroethyl group, a
2-chloroisobutyl group, a 1,2-dichloroethyl group, a
1,3-dichloroisopropyl group, a 2,3-dichloro-t-butyl group, a
1,2,3-trichloropropyl group, a bromomethyl group, a 1-bromoethyl
group, a 2-bromoethyl group, a 2-bromoisobutyl group, a
1,2-dibromoethyl group, a 1,3-dibromoisopropyl group, a
2,3-dibromo-t-butyl group, a 1,2,3-tribromopropyl group, an
iodomethyl group, a 1-iodoethyl group, a 2-iodoethyl group, a
2-iodoisobutyl group, a 1,2-diiodoethyl group, a
1,3-diiodoisopropyl group, a 2,3-diiodo-t-butyl group, a
1,2,3-triiodopropyl group, a cyanomethyl group, a 1-cyanoethyl
group, a 2-cyanoethyl group, a 2-cyanoisobutyl group, a
1,2-dicyanoethyl group, a 1,3-dicyanoisopropyl group, a
2,3-dicyano-t-butyl group, a 1,2,3-tricyanopropyl group, a
nitromethyl group, a 1-nitroethyl group, a 2-nitroethyl group, a
2-nitroisobutyl group, a 1,2-dinitroethyl group, a
1,3-dinitroisopropyl group, a 2,3-dinitro-t-butyl group, a
1,2,3-trinitropropyl group, a 1-pyrrolylmethyl group, a
2-(1-pyrrolyl)ethyl group, a 1-hydroxy-2-phenylisopropyl group, a
1-chloro-2-phenyl-isopropyl group or the like can be given.
[0040] The substituted or unsubstituted haloalkyl group including 1
to 50 carbon atoms is a group in which one or more of hydrogen
atoms of the alkyl group is substituted by a halogen atom. As the
substituted or unsubstituted haloalkyl group including 1 to 50
carbon atoms, a group obtained by substituting one or more halogen
atoms in the above-mentioned substituted or unsubstituted alkyl
group including 1 to 50 carbon atoms can be given.
[0041] As the unsubstituted alkenyl group including 2 to 50
(preferably 2 to 30, more preferably 2 to 18) carbon atoms, a vinyl
group, an allyl group, a 1-butenyl group, a 2-butenyl group, a
3-butenyl group, a 1,3-butanedienyl group, a 1-methylvinyl group, a
1-methylallyl group, a 1,1-dimethylallyl group, a 2-methylally
group, a 1,2-dimethylallyl group or the like can be given.
[0042] As the unsubstituted alkynyl group including 2 to 50
(preferably 2 to 30, more preferably 2 to 18) carbon atoms, an
ethynyl group or the like can be given.
[0043] As the unsubstituted cycloalkyl group including 3 to 50
(preferably 3 to 30, more preferably 3 to 18, and further
preferably 3 to 6) ring carbon atoms, a cyclopropyl group, a
cyclobutyl group, a cyclopentyl group, a cyclohexyl group, a
4-methylcyclohexyl group, a 1-adamantyl group, a 2-adamantyl group,
a 1-norbornyl group, a 2-norbornyl group or the like can be
given.
[0044] The unsubstituted alkoxy group including 1 to 50 (preferably
1 to 30, more preferably 1 to 18) carbon atoms is represented by
--OX. As examples of X, the alkyl group including 1 to 50 carbon
atoms mentioned above can be given, for example.
[0045] The unsubstituted alkyl group including 1 to 50 (preferably
1 to 30, more preferably 1 to 18) carbon atoms is represented by
--SX. As examples of X, the alkyl group including 1 to 50 carbon
atoms mentioned above can be given, for example.
[0046] As the unsubstituted aryl group including 6 to 50
(preferably 6 to 30, more preferably 6 to 18) ring carbon atoms, a
phenyl group, a 1-naphthyl group, a 2-naphthyl group, a 1-anthryl
group, a 2-anthryl group, a 9-anthryl group, a 9-phenanthryl group,
a 1-phenanthryl group, a 2-phenanthryl group, a 3-phenanthryl
group, a 4-phenanthryl group, a 1-naphthacenyl group, a
2-naphthacenyl group, a 9-naphthacenyl group, a 1-pyrenyl group, a
2-pyrenyl group, a 4-pyrenyl group, a 2-biphenylyl group, a
3-biphenylyl group, a 4-biphenylyl group, a p-terphenyl-4-yl group,
a p-terphenyl-3-yl group, a p-terphenyl-2-yl group, a
m-terphenyl-4-yl group, a m-terphenyl-3-yl group, a
m-terphenyl-2-yl group, a fluorenyl group or the like can be
given.
[0047] Among these, a phenyl group, a naphthyl group, a biphenylyl
group, a terphenyl group, a pyrenyl group, a phenanthryl group and
a fluorenyl group are preferable. A phenyl group, a naphthyl group,
a biphenylyl group, a terphenyl group, a pyrenyl group and a
fluorenyl group are more preferable.
[0048] As the substituted aryl group including 6 to 50 (preferably
6 to 30, more preferably 6 to 18) ring carbon atoms, an o-tolyl
group, a m-tolyl group, a p-tolyl group, a para-isopropylphenyl
group, a meta-isopropylphenyl group, an ortho-isopropylphenyl
group, a p-t-butylphenyl group, a meta-t-butylphenyl group, an
ortho-t-butylphenyl group, a 3,4,5-trimethylphenyl group, a
4-phenoxyphenyl group, a 4-methoxyphenyl group, a
3,4-dimethoxyphenyl group, a 3,4,5-trimethoxyphenyl group, a
4-(phenylsulfanyl) phenyl group, a 4-(methylsulfanyl)phenyl group,
a N',N'-dimethyl-N-phenyl group, a, 2,6-dimethylphenyl group, a
2-(phenylpropyl)phenyl group, a 3-methyl-2-naphthyl group, a
4-methyl-1-naphthyl group, a 4-methyl-1-anthryl group, a
4'-methylbiphenylyl group, a 4''-t-butyl-p-terphenyl-4-yl group, a
9,9-dimethylfluorenyl group, a 9,9-diphenylfluorenyl group, a
9,9'-spirobifluorenyl group, a 9,9-di(4-methylphenyl)fluorenyl
group, a 9,9-di(4-isopropylphenyl)fluorenyl group, a
9,9-di(4-t-butylphenyl)fluorenyl group, a chrysenyl group, a
fluoranthenyl group or the like can be given.
[0049] As the unsubstituted arylene group including 6 to 50
(preferably 6 to 30, more preferably 6 to 18) ring carbon atoms, a
divalent group formed of an aromatic hydrocarbon ring constituting
the aryl group including 6 to 50 ring carbon atoms exemplified
above can be given.
[0050] The unsubstituted aryloxy group including 6 to 50
(preferably 6 to 30, more preferably 6 to 18) ring carbon atoms is
represented by --OY. As examples of Y, the aryl group including 6
to 50 ring carbon atoms mentioned above can be given.
[0051] The unsubstituted arylthio group including 6 to 50
(preferably 6 to 30, more preferably 6 to 18) ring carbon atoms is
represented by --SY. As examples of Y, the aryl group including 6
to 50 ring carbon atoms mentioned above can be given.
[0052] As the unsubstituted aralkyl group including 7 to 50
(preferably 7 to 30, more preferably 7 to 18) carbon atoms, a
benzyl group, a 1-phenylethyl group, a 2-phenylethyl group, a
1-phenylisopropyl group, a 2-phenylisopropyl group, a
phenyl-t-butyl group, a .alpha.-naphthylmethyl group, a
1-.alpha.-naphthylethyl group, a 2-.alpha.-naphthylethyl group,
1-.alpha.-naphthylisopropyl group, a 2-.alpha.-naphthylisopropyl
group, a .beta.-naphthylmethyl group, a 1-.beta.-naphthylethyl
group, a 2-.beta.-naphthylethyl group, a 1-.beta.-naphthylisopropyl
group, a 2-.beta.-naphthylisopropyl group or the like can be
given.
[0053] As the substituted aralkyl group including 7 to 50
(preferably 7 to 30, more preferably 7 to 18) carbon atoms, a
p-methylbenzyl group, a m-methylbenzyl group, an o-methylbenzyl
group, a p-chlorobenzyl group, a m-chlorobenzyl group, an
o-chlorobenzyl group, a p-bromobenzyl group, a m-bromobenzyl group,
an o-bromobenzyl group, a p-iodobenzyl group, a m-iodobenzyl group,
an o-iodobenzyl group, a p-hydroxybenzyl group, a m-hydroxybenzyl
group, an o-hydroxybenzyl group, a p-nitrobenzyl group, a
m-nitrobenzyl group, an o-nitrobenzyl group, a p-cyanobenzyl group,
a m-cyanobenzyl group, an o-cyanobenzyl group or the like can be
given, for example.
[0054] As the unsubstituted monovalent heterocyclic group including
5 to 50 (preferably 5 to 30, more preferably 5 to 18) ring atoms, a
pyrrolyl group, a pyrazinyl group, a pyridinyl group, an indolyl
group, an isoindolyl group, a furyl group, a benzofuranyl group, an
isobenzofuranyl group, a dibenzofuranyl group, a dibenzothiophenyl
group, a quinolyl group, an isoquinolyl group, a quinoxalinyl
group, a carbazolyl group, a phenanthridinyl group, an acridinyl
group, a phenanthrolinyl group, and a thienyl group or the like,
and a monovalent group formed of a pyridine ring, a pyrazine ring,
a pyrimidine ring, a pyridazine ring, a triazine ring, an indole
ring, a quinoline ring, an acridine ring, a pyrrolidine ring, a
dioxane ring, a piperidine ring, a morpholine ring, a piperazine
ring, a carbazole ring, a furan ring, a thiophene ring, an oxazole
ring, an oxadiazole ring, a benzoxazole ring, a thiazole ring, a
thiadiazole ring, a benzothiazole ring, a triazole ring, an
imidazole ring, a benzimidazole ring, a pyran ring, a dibenzofuran
ring, a benzo[a]dibenzofuran ring, a benzo[b]dibenzofuran ring and
benzo[c]dibenzofuran ring, a 1,3-benzodioxole ring, a
2,3-dihydro-1,4-benzodioxine ring, a phenanthro[4,5-bcd] furan
ring, a benzophenoxazine ring or the like can be given.
[0055] As the hetero atom constituting the heterocyclic group, in
addition to a hetero atom such as S, O, N or the like, a hetero
atom such as Si, Ge and Se can be given.
[0056] As the unsubstituted divalent heterocyclic group including 5
to 50 (preferably 5 to 30, more preferably 5 to 18) ring carbon
atoms, a divalent group formed of the above-exemplified groups and
the monovalent heterocyclic group or the like can be given.
[0057] As the substituted or unsubstituted monovalent heterocyclic
group including 5 to 50 ring atoms, the following groups are
included. As the divalent heterocyclic group including 5 to 50 ring
atoms, groups obtained by forming the following groups into
divalent groups are also included.
##STR00004## ##STR00005## ##STR00006##
[0058] wherein X.sub.1A to X.sub.6A and Y.sub.1A to Y.sub.6A are
independently an oxygen atom, a sulfur atom, a --NZ-group or a
--NH-group. Z is a substituted or unsubstituted aryl group
including 6 to 50 ring carbon atoms, a substituted or unsubstituted
monovalent heterocyclic group including 5 to 50 ring atoms or a
substituted or unsubstituted alkyl group including 1 to 50 carbon
atoms. When two or more Zs are present, the two or more Zs may be
the same or different.
[0059] As the halogen atom, a fluorine atom, a chlorine atom, a
bromine atom, an iodine atom or the like can be given.
<Organic Electroluminescence Device>
[0060] The organic electroluminescence device according to one
aspect of the invention comprises a cathode, an anode and at least
one organic layer disposed between the cathode and the anode.
[0061] At least one layer of the at least one organic layer
comprises the compound represented by the following formulas (1-1)
and (1-3) or the compound represented by the following formulas
(1-2) and (1-3):
##STR00007##
[0062] wherein in the formulas (1-1), (1-2) and (1-3),
[0063] a ring A is a substituted or unsubstituted fused aryl ring
including 10 to 50 ring carbon atoms, a substituted or
unsubstituted fused heterocyclic ring including 8 to 50 ring atoms
or a benzene ring represented by the following formula (2);
[0064] two atomic bondings * in the formula (1-1) are respectively
bonded with a ring carbon atom of the fused aryl ring of the ring
A, a ring atom of the fused heterocyclic ring of the ring A, or a
ring carbon atom of the benzene ring represented by the formula (2)
of the ring A;
[0065] three atomic bondings * in the formula (1-2) are
respectively bonded with a ring carbon atom of the fused aryl ring
of the ring A, a ring atom of the fused heterocyclic ring of the
ring A, or a ring carbon atom of the benzene ring represented by
the formula (2) of the ring A;
[0066] one or more pairs of adjacent two or more of R.sub.1 to
R.sub.16 may form a substituted or unsubstituted, saturated or
unsaturated ring;
[0067] R.sub.1 to R.sub.16 that do not form the substituted or
unsubstituted, saturated or unsaturated ring are independently a
hydrogen atom, a substituted or unsubstituted alkyl group including
1 to 50 carbon atoms, a substituted or unsubstituted haloalkyl
group including 1 to 50 carbon atoms, a substituted or
unsubstituted alkenyl group including 2 to 50 carbon atoms, a
substituted or unsubstituted alkynyl group including 2 to 50 carbon
atoms, a substituted or unsubstituted cycloalkyl group including 3
to 50 ring carbon atoms, a substituted or unsubstituted alkoxy
group including 1 to 50 carbon atoms, a substituted or
unsubstituted alkylthio group including 1 to 50 carbon atoms, a
substituted or unsubstituted aryloxy group including 6 to 50 ring
carbon atoms, a substituted or unsubstituted arylthio group
including 6 to 50 ring carbon atoms, a substituted or unsubstituted
aralkyl group including 7 to 50 carbon atoms,
--Si(R.sub.31)(R.sub.32)(R.sub.33), --C(.dbd.O)R.sub.34,
--COOR.sub.35, --N(R.sub.36)(R.sub.37), a halogen atom, a cyano
group, a nitro group, a substituted or unsubstituted aryl group
including 6 to 50 ring carbon atoms or a substituted or
unsubstituted monovalent heterocyclic group including 5 to 50 ring
atoms;
[0068] R.sub.31 to R.sub.37 are independently a hydrogen atom, a
substituted or unsubstituted alkyl group including 1 to 50 carbon
atoms, a substituted or unsubstituted cycloalkyl group including 3
to 50 ring carbon atoms, a substituted or unsubstituted aryl group
including 6 to 50 ring carbon atoms or a substituted or
unsubstituted monovalent heterocyclic group including 5 to 50 ring
atoms; and
[0069] when each of R.sub.31 to R.sub.37 is present in plural, each
of the plural R.sub.31s to R.sub.37s may be the same or
different;
##STR00008##
[0070] wherein in the formula (2), at one of the two ring carbon
atoms indicated by *, the atomic bonding extending from the benzene
ring B in the formula (1-1) or the formula (1-2) is bonded, and at
the other of the two ring carbon atoms indicated by *, the atomic
bonding extending from the benzene ring C in the formula (1-3) is
bonded;
[0071] R.sub.17 is a hydrogen atom, a substituted or unsubstituted
alkyl group including 1 to 50 carbon atoms, a substituted or
unsubstituted haloalkyl group including 1 to 50 carbon atoms, a
substituted or unsubstituted alkenyl group including 2 to 50 carbon
atoms, a substituted or unsubstituted alkynyl group including 2 to
50 carbon atoms, a substituted or unsubstituted cycloalkyl group
including 3 to 50 ring carbon atoms, a substituted or unsubstituted
alkoxy group including 1 to 50 carbon atoms, a substituted or
unsubstituted alkylthio group including 1 to 50 carbon atoms, a
substituted or unsubstituted aryloxy group including 6 to 50 ring
carbon atoms, a substituted or unsubstituted arylthio group
including 6 to 50 ring carbon atoms, a substituted or unsubstituted
aralkyl group including 7 to 50 carbon atoms,
--Si(R.sub.31)(R.sub.32)(R.sub.33), --C(.dbd.O)R.sub.34,
--COOR.sub.35, --N(R.sub.36)(R.sub.37), a halogen atom, a cyano
group, a nitro group, a substituted or unsubstituted aryl group
including 6 to 50 ring carbon atoms or a substituted or
unsubstituted monovalent heterocyclic group including 5 to 50 ring
atoms;
[0072] R.sub.31 to R.sub.37 are independently a hydrogen atom, a
substituted or unsubstituted alkyl group including 1 to 50 carbon
atoms, a substituted or unsubstituted cycloalkyl group including 3
to 50 ring carbon atoms, a substituted or unsubstituted aryl group
including 6 to 50 ring carbon atoms or a substituted or
unsubstituted monovalent heterocyclic group including 5 to 50 ring
atoms;
[0073] when each of R.sub.31 to R.sub.37 is present in plural, each
of the plural R.sub.31s to R.sub.37s may be the same or different;
and
[0074] n is an integer of 1 or 2, and when n is 2, two R.sub.17s
may be the same or different.
[0075] In the formulas (1-1), (1-2) and (1-3), the fused aryl ring
is a ring obtained by fusion of plural aromatic rings. Therefore,
biphenyl obtained by bonding of two aromatic rings through a single
bond is not included in the fused aryl ring.
[0076] In the formulas (1-1), (1-2) and (1-3), the fused
heterocyclic ring is a ring obtained by fusion of plural
heterocyclic rings or a ring obtained by fusion of a heterocyclic
ring and an aromatic ring.
[0077] An explanation will be given on "one or more pairs of two or
more adjacent groups of R.sub.1 to R.sub.16 may form a substituted
or unsubstituted, saturated or unsaturated ring".
[0078] The "one or more pairs of two or more adjacent groups of
R.sub.1 to R.sub.16" is a combination of R.sub.1 and R.sub.2,
R.sub.2 and R.sub.3, R.sub.3 and R.sub.4, R.sub.5 and R.sub.6,
R.sub.6 and R.sub.7, R.sub.1 and R.sub.2 and R.sub.3 or the like,
for example.
[0079] For the substituent when the "substituted or unsubstituted"
saturated or unsaturated ring is "substituted", the same
substituents as those for "substituted or unsubstituted" mentioned
later can be given.
[0080] The "saturated or unsaturated ring" means, when R.sub.1 and
R.sub.2 form a ring, a ring formed by a carbon atom with which
R.sub.1 is bonded, a carbon atom with which R.sub.2 is bonded and
one or more arbitrary elements. Specifically, when a ring is formed
by R.sub.1 and R.sub.2, if an unsaturated ring is formed by a
carbon atom with which R.sub.1 is bonded, a carbon atom with which
R.sub.2 is bonded and 4 carbon atoms, a ring formed by R.sub.1 and
R.sub.2 is a benzene ring.
[0081] The "arbitrary element" is preferably a C element, a N
element, an O element and a S element. In an arbitrary element (for
example, in the case of a C element or a N element), an atomic
bonding that does not form a ring may be terminated with a hydrogen
atom or the like.
[0082] The "one or more arbitrary elements" is preferably 2 or more
and 15 or less, more preferably 3 or more and 12 or less, and
further preferably 3 or more and 5 or less arbitrary elements.
[0083] Hereinbelow, the "one or more pairs of two or more adjacent
groups of X to Y may form a substituted or unsubstituted, saturated
or unsaturated ring" has the same meaning as the mentioned above,
except that X is changed to R.sub.1 and Y is changed to
R.sub.16.
[0084] Hereinbelow, an explanation is made on a compound
represented by the formulas (1-1) and (1-3), and a compound
represented by the formulas (1-2) and (1-3).
[0085] The "*" in the formula (1-1) is an atomic bonding that is
bonded with the ring A in the formula (1-3). In the formula (1-1),
there are two "*"s. The two ""s are respectively bonded with a ring
carbon atom in the fused aryl ring in the ring A, a ring atom in
the fused heterocyclic ring, or a ring carbon atom of the benzene
ring represented by the formula (2), and form a compound.
[0086] The "*" in the formula (1-2) is also an atomic bonding that
is bonded with the ring A in the formula (1-3). In the formula
(1-2), there are three "*"s. The three ""s are respectively bonded
with a ring carbon atom in the fused aryl ring in the ring A, a
ring atom in the fused heterocyclic ring, or a ring carbon atom of
the benzene ring represented by the formula (2), and form a
compound.
[0087] The "*" in the formula (2) indicates a bonding position. At
one of the ring carbon atoms indicated by the two *s, an atomic
bonding extending from the benzene ring B in the formula (1-1) or
(1-2) is bonded, and at the other of ring carbon atoms indicated by
the two *s, an atomic bonding extending from the benzene ring C in
the formula (1-3) is bonded.
[0088] In one embodiment, the compound represented by the formulas
(1-1) and (1-3) or the compound represented by the formulas (1-2)
and (1-3) are compounds represented by the following formula (3),
(4) or (5).
##STR00009##
[0089] wherein in the formulas (3), (4) and (5),
[0090] the ring A' is a substituted or unsubstituted fused aryl
ring including 10 to 50 ring carbon atoms or a substituted or
unsubstituted fused heterocyclic ring including 8 to 50 ring
atoms.
[0091] R.sub.1 to R.sub.7 and R.sub.10 to R.sub.17 are as defined
in the formulas (1-1), (1-2), (1-3) and (2).
[0092] In one embodiment, the substituted or unsubstituted fused
aryl ring including 10 to 50 ring carbon atoms in the ring A in the
formula (1-3) or the ring A' in the formula (5) is a substituted or
unsubstituted naphthalene ring or a substituted or unsubstituted
fluorene ring.
[0093] In one embodiment, the substituted or unsubstituted fused
heterocyclic ring including 8 to 50 ring atoms in the ring A in the
formula (1-3) or the ring A' in the formula (5) is a substituted or
unsubstituted dibenzofurane ring, a substituted or unsubstituted
carbazole ring or a substituted or unsubstituted dibenzothiophene
ring.
[0094] In one embodiment, the compound represented by the formulas
(1-1) and (1-3) or the compound represented by the formulas (1-2)
and (1-3) are selected from the group consisting of compounds
represented by the following formulas (6-1) to (6-7):
##STR00010## ##STR00011##
[0095] wherein in the formulas (6-1) to (6-7),
[0096] R.sub.1 to R.sub.17 are as defined in the formulas (1-1),
(1-2), (1-3) and (2);
[0097] X is O, NR.sub.25 or C(R.sub.26) (R.sub.27).
[0098] one or more pairs of adjacent two or more of R.sub.21 to
R.sub.27 may form a substituted or unsubstituted, saturated or
unsaturated ring;
[0099] R.sub.21 to R.sub.27 that do not form the substituted or
unsubstituted, saturated or unsaturated ring are independently a
hydrogen atom, a substituted or unsubstituted alkyl group including
1 to 50 carbon atoms, a substituted or unsubstituted haloalkyl
group including 1 to 50 carbon atoms, a substituted or
unsubstituted alkenyl group including 2 to 50 carbon atoms, a
substituted or unsubstituted alkynyl group including 2 to 50 carbon
atoms, a substituted or unsubstituted cycloalkyl group including 3
to 50 ring carbon atoms, a substituted or unsubstituted alkoxy
group including 1 to 50 carbon atoms, a substituted or
unsubstituted alkylthio group including 1 to 50 carbon atoms, a
substituted or unsubstituted aryloxy group including 6 to 50 ring
carbon atoms, a substituted or unsubstituted arylthio group
including 6 to 50 ring carbon atoms, a substituted or unsubstituted
aralkyl group including 7 to 50 carbon atoms,
--Si(R.sub.31)(R.sub.32)(R.sub.33), --C(.dbd.O)R.sub.34,
--COOR.sub.35, --N(R.sub.36)(R.sub.37), a halogen atom, a cyano
group, a nitro group, a substituted or unsubstituted aryl group
including 6 to 50 ring carbon atoms or a substituted or
unsubstituted monovalent heterocyclic group including 5 to 50 ring
atoms;
[0100] R.sub.31 to R.sub.37 are independently a hydrogen atom, a
substituted or unsubstituted alkyl group including 1 to 50 carbon
atoms, a substituted or unsubstituted cycloalkyl group including 3
to 50 ring carbon atoms, a substituted or unsubstituted aryl group
including 6 to 50 ring carbon atoms or a substituted or
unsubstituted monovalent heterocyclic group including 5 to 50 ring
atoms; and when each of R.sub.31 to R.sub.37 is present in plural,
each of the plural R.sub.31 to R.sub.37 may be the same or
different.
[0101] In one embodiment, the compound represented by the formulas
(1-1) and (1-3) or the compound represented by the formulas (1-2)
and (1-3) is a compound represented by the following formula
(3-2):
##STR00012##
[0102] wherein in the formula (3-2),
[0103] R.sub.3, R.sub.5, R.sub.6, R.sub.10, R.sub.12 and R.sub.13
are as defined in the formulas (1-1) and (1-3).
[0104] In one embodiment, the compound represented by the formulas
(1-1) and (1-3) or the compound represented by the formulas (1-2)
and (1-3) is a compound represented by the following formula
(7):
##STR00013##
[0105] wherein in the formula (7),
[0106] R.sub.3, R.sub.5, R.sub.6, R.sub.12, R.sub.14 and R.sub.15
are as defined in the formula (1-2) and the formula (1-3).
[0107] In one embodiment, R.sub.1 to R.sub.17 are independently
selected from the group consisting of a hydrogen atom, a
substituted or unsubstituted aryl group including 6 to 50 ring
carbon atoms and a substituted or unsubstituted heterocyclic group
including 5 to 50 ring atoms.
[0108] In one embodiment, R.sub.1 to R.sub.17 are independently
selected from the group consisting of a hydrogen atom, a
substituted or unsubstituted aryl group including 6 to 18 ring
carbon atoms and a substituted or unsubstituted heterocyclic group
including 5 to 18 ring atoms.
[0109] A substituent in the "substituted or unsubstituted" in the
compound represented by the formula (1-1) and (1-3) and the
compound represented by the formula (1-2) and (1-3) is selected
from the group consisting of an alkyl group including 1 to 50
carbon atoms, a haloalkyl group including 1 to 50 carbon atoms, an
alkenyl group including 2 to 50 carbon atoms, an alkynyl group
including 2 to 50 carbon atoms, a cycloalkyl group including 3 to
50 ring carbon atoms, an alkoxy group including 1 to 50 carbon
atoms, an alkylthio group including 1 to 50 carbon atoms, an
aryloxy group including 6 to 50 ring carbon atoms, an arylthio
group including 6 to 50 ring carbon atoms, an aralkyl group
including 7 to 50 carbon atoms, --Si(R.sub.41)(R.sub.42)(R.sub.43),
--C(.dbd.O)R.sub.44, --COOR.sub.45, --S(.dbd.O).sub.2R.sub.46,
--P(.dbd.O)(R.sub.47)(R.sub.48), --
[0110] Ge(R.sub.49)(R.sub.50)(R.sub.51), --N(R.sub.52)(R.sub.53)
(wherein R.sub.41 to R.sub.53 are independently a hydrogen atom, an
alkyl group including 1 to 50 carbon atoms, an aryl group including
6 to 50 ring carbon atoms or a heterocyclic group including 5 to 50
ring atoms. When each of R.sub.41s to R.sub.53s are present in
plural, each of the plural R.sub.41s to R.sub.53s may be the same
or different), a hydroxyl group, a halogen atom, a cyano group, a
nitro group, an aryl group including 6 to 50 ring carbon atoms, and
a monovalent heterocyclic group including 5 to 50 ring atoms.
[0111] In one embodiment, the substituent in the "substituted or
unsubstituted" in the compound represented by the formulas (1-1)
and (1-3) and the compound represented by the formulas (1-2) and
(1-3) is an alkyl group including 1 to 50 carbon atoms, an aryl
group including 6 to 50 ring carbon atoms and a monovalent
heterocyclic group including 5 to 50 ring atoms.
[0112] In one embodiment, the substituent in the "substituted or
unsubstituted" in the compound represented by the formulas (1-1)
and (1-3) and the compound represented by the formulas (1-2) and
(1-3) is selected from the group consisting of an alkyl group
including 1 to 18 carbon atoms, an aryl group including 6 to 18
ring carbon atoms and a monovalent heterocyclic group including 5
to 18 ring atoms.
[0113] Specific examples of each substituent, substituents for
"substituted or unsubstituted" and halogen atoms in the compound
represented by the formulas (1-1) and (1-3), and the compound
represented by the formulas (1-2) and (1-3) are the same as those
mentioned above.
[0114] As specific example of the compound represented by the
formulas (1-1) and (1-3) and the compound represented by the
formulas (1-2) and (1-3), the following compounds can be given, for
example.
##STR00014## ##STR00015## ##STR00016## ##STR00017## ##STR00018##
##STR00019## ##STR00020## ##STR00021## ##STR00022## ##STR00023##
##STR00024## ##STR00025## ##STR00026## ##STR00027## ##STR00028##
##STR00029## ##STR00030##
##STR00031## ##STR00032## ##STR00033## ##STR00034## ##STR00035##
##STR00036## ##STR00037## ##STR00038## ##STR00039## ##STR00040##
##STR00041## ##STR00042## ##STR00043## ##STR00044## ##STR00045##
##STR00046## ##STR00047##
##STR00048## ##STR00049## ##STR00050## ##STR00051## ##STR00052##
##STR00053## ##STR00054## ##STR00055## ##STR00056## ##STR00057##
##STR00058## ##STR00059## ##STR00060## ##STR00061## ##STR00062##
##STR00063## ##STR00064## ##STR00065## ##STR00066##
##STR00067## ##STR00068## ##STR00069## ##STR00070## ##STR00071##
##STR00072## ##STR00073## ##STR00074## ##STR00075## ##STR00076##
##STR00077## ##STR00078## ##STR00079## ##STR00080## ##STR00081##
##STR00082## ##STR00083## ##STR00084## ##STR00085## ##STR00086##
##STR00087## ##STR00088## ##STR00089## ##STR00090## ##STR00091##
##STR00092## ##STR00093## ##STR00094## ##STR00095##
[0115] The compound represented by the formulas (1-1) and (1-3) and
the compound represented by the formulas (1-2) and (1-3) can be
synthesized in accordance with the reaction conducted in the
Examples, and by using a known alternative reaction or raw
materials suited to an intended product, for example.
[0116] In another aspect of the invention, an organic
electroluminescence device has a cathode, an anode, and at least
one organic layer disposed between the cathode and the anode.
[0117] The at least one layer of the at least one organic layer
comprises a compound represented by the following formula
(3-I):
##STR00096##
[0118] wherein in the formula (3-I),
[0119] one or more pairs of adjacent two or more of R.sub.1 to
R.sub.7 and R.sub.10 to R.sub.16 may form a substituted or
unsubstituted, saturated or unsaturated ring;
[0120] R.sub.1 to R.sub.7 and R.sub.10 to R.sub.16 that do not form
the substituted or unsubstituted, saturated or unsaturated ring are
independently a hydrogen atom, a substituted or unsubstituted alkyl
group including 1 to 50 carbon atoms, a substituted or
unsubstituted haloalkyl group including 1 to 50 carbon atoms, a
substituted or unsubstituted alkenyl group including 2 to 50 carbon
atoms, a substituted or unsubstituted alkynyl group including 2 to
50 carbon atoms, a substituted or unsubstituted cycloalkyl group
including 3 to 50 ring carbon atoms, a substituted or unsubstituted
alkoxy group including 1 to 50 carbon atoms, a substituted or
unsubstituted alkylthio group including 1 to 50 carbon atoms, a
substituted or unsubstituted aryloxy group including 6 to 50 ring
carbon atoms, a substituted or unsubstituted arylthio group
including 6 to 50 ring carbon atoms, a substituted or unsubstituted
aralkyl group including 7 to 50 carbon atoms,
--Si(R.sub.31)(R.sub.32)(R.sub.33), --C(.dbd.O)R.sub.34,
--COOR.sub.35, --N(R.sub.36)(R.sub.37), a halogen atom, a cyano
group, a nitro group, a substituted or unsubstituted aryl group
including 6 to 50 ring carbon atoms or a substituted or
unsubstituted monovalent heterocyclic group including 5 to 50 ring
atoms, provided that at least one of R.sub.1 to R.sub.7 and
R.sub.10 to R.sub.16 is --N(R.sub.36)(R.sub.37);
[0121] R.sub.17 is a hydrogen atom, a substituted or unsubstituted
alkyl group including 1 to 50 carbon atoms, a substituted or
unsubstituted haloalkyl group including 1 to 50 carbon atoms, a
substituted or unsubstituted alkenyl group including 2 to 50 carbon
atoms, a substituted or unsubstituted alkynyl group including 2 to
50 carbon atoms, a substituted or unsubstituted cycloalkyl group
including 3 to 50 ring carbon atoms, a substituted or unsubstituted
alkoxy group including 1 to 50 carbon atoms, a substituted or
unsubstituted alkylthio group including 1 to 50 carbon atoms, a
substituted or unsubstituted aryloxy group including 6 to 50 ring
carbon atoms, a substituted or unsubstituted arylthio group
including 6 to 50 ring carbon atoms, a substituted or unsubstituted
aralkyl group including 7 to 50 carbon atoms,
--Si(R.sub.31)(R.sub.32)(R.sub.33), --C(.dbd.O)R.sub.34,
--COOR.sub.35, --N(R.sub.36)(R.sub.37), a halogen atom, a cyano
group, a nitro group, a substituted or unsubstituted aryl group
including 6 to 50 ring carbon atoms or a substituted or
unsubstituted monovalent heterocyclic group including 5 to 50 ring
atoms;
[0122] two R.sub.17s may be the same or different;
[0123] R.sub.31 to R.sub.37 are independently a hydrogen atom, a
substituted or unsubstituted alkyl group including 1 to 50 carbon
atoms, a substituted or unsubstituted cycloalkyl group including 3
to 50 ring carbon atoms, a substituted or unsubstituted aryl group
including 6 to 50 ring carbon atoms or a substituted or
unsubstituted monovalent heterocyclic group including 5 to 50 ring
atoms;
[0124] when each of R.sub.31 to R.sub.37 is present in plural, each
of the plural R.sub.31s to R.sub.37s may be the same or
different.
[0125] An explanation will be given on the feature that "one or
more pairs of two or more adjacent groups of R.sub.1 to R.sub.7 and
R.sub.10 to R.sub.16 may form a substituted or unsubstituted,
saturated or unsaturated ring."
[0126] The "one or more pairs of two or more adjacent groups of
R.sub.1 to R.sub.7 and R.sub.10 to R.sub.16" is a combination of:
for example, R.sub.1 and R.sub.2; R.sub.2 and R.sub.3; R.sub.3 and
R.sub.4; R.sub.5 and R.sub.6; R.sub.6 and R.sub.7; R.sub.1 and
R.sub.2 and R.sub.3 or the like.
[0127] For the substituent when the "substituted or unsubstituted"
saturated or unsaturated ring is "substituted", the same
substituents as those for "substituted or unsubstituted" mentioned
later can be given.
[0128] The "saturated or unsaturated ring" means, as an example
when R.sub.1 and R.sub.2 form a ring, a ring formed by: a carbon
atom with which R.sub.1 is bonded; a carbon atom with which R.sub.2
is bonded; and one or more arbitrary elements. Specifically, when a
ring is formed by R.sub.1 and R.sub.2, if an unsaturated ring is
formed by a carbon atom with which R.sub.1 is bonded, a carbon atom
with which R.sub.2 is bonded and 4 carbon atoms, a ring formed by
R.sub.1 and R.sub.2 is a benzene ring.
[0129] The "arbitrary element" is preferably a C element, a N
element, an O element and a S element. For an arbitrary element
(for example, in the case of a C element or a N element), an atomic
bonding that does not form a ring may be terminated with a hydrogen
atom or the like.
[0130] The "one or more arbitrary elements" are preferably 2 or
more and 15 or less, more preferably 3 or more and 12 or less, and
further preferably 3 or more and 5 or less arbitrary elements.
[0131] Hereinbelow, the expression "one or more pairs of two or
more adjacent groups of X to Y may form a substituted or
unsubstituted, saturated or unsaturated ring" has the same meaning
as the mentioned above, except that X is changed to R.sub.1 and Y
is changed to R.sub.16.
[0132] In one embodiment, the compound represented by the formula
(3-I) is a compound represented by the following formula
(3-II):
##STR00097##
[0133] wherein in the formula (3-II),
[0134] R.sub.1 to R.sub.7 and R.sub.10 to R.sub.16 are as defined
in the formula (3-I), provided that any two of R.sub.1 to R.sub.7
and R.sub.10 to R.sub.16 are --N(R.sub.36)(R.sub.37).
[0135] In one embodiment, R.sub.1 to R.sub.7 and R.sub.10 to
R.sub.16 are independently selected from the group consisting of a
hydrogen atom, a substituted or unsubstituted aryl group including
6 to 50 ring carbon atoms and a substituted or unsubstituted
heterocyclic group including 5 to 50 ring atoms.
[0136] In one embodiment, R.sub.1 to R.sub.7 and R.sub.10 to
R.sub.16 are independently selected from the group consisting of a
hydrogen atom, a substituted or unsubstituted aryl group including
6 to 18 ring carbon atoms and a substituted or unsubstituted
heterocyclic group including 5 to 18 ring atoms.
[0137] A substituent in the "substituted or unsubstituted" in the
compound represented by the formula (3-I) is selected from the
group consisting of an alkyl group including 1 to 50 carbon atoms,
a haloalkyl group including 1 to 50 carbon atoms, an alkenyl group
including 2 to 50 carbon atoms, an alkynyl group including 2 to 50
carbon atoms, a cycloalkyl group including 3 to 50 ring carbon
atoms, an alkoxy group including 1 to 50 carbon atoms, an alkylthio
group including 1 to 50 carbon atoms, an aryloxy group including 6
to 50 ring carbon atoms, an arylthio group including 6 to 50 ring
carbon atoms, an aralkyl group including 7 to 50 carbon atoms,
--Si(R.sub.41)(R.sub.42)(R.sub.43), --C(.dbd.O)R.sub.44,
--COOR.sub.45, --S(.dbd.O).sub.2R.sub.46,
--P(.dbd.O)(R.sub.47)(R.sub.48),
--Ge(R.sub.43)(R.sub.50)(R.sub.51), --N(R.sub.52)(R.sub.53)
(R.sub.41 to R.sub.53 are independently a hydrogen atom, an alkyl
group including 1 to 50 carbon atoms, an aryl group including 6 to
50 ring carbon atoms or a heterocyclic group including 5 to 50 ring
atoms. When each of R.sub.41 to R.sub.53 is present in plural, each
of the plural R.sub.41s to R.sub.53s may be the same or
different.), a hydroxyl group, a halogen atom, a cyano group, a
nitro group, an aryl group including 6 to 50 ring carbon atoms, and
a monovalent heterocyclic group including 5 to 50 ring atoms.
[0138] In one embodiment, the substituent in the "substituted or
unsubstituted" in the compound represented by the formula (3-I) is
an alkyl group including 1 to 50 carbon atoms, an aryl group
including 6 to 50 ring carbon atoms and a monovalent heterocyclic
group including 5 to 50 ring atoms.
[0139] In one embodiment, the substituent in the "substituted or
unsubstituted" in the compound represented by the formula (3-I) is
selected from the group consisting of an alkyl group including 1 to
18 carbon atoms, an aryl group including 6 to 18 ring carbon atoms
and a monovalent heterocyclic group including 5 to 18 ring
atoms.
[0140] Specific examples of each substituent, substituents for
"substituted or unsubstituted" and halogen atoms in the compound
represented by the formula (3-I) are the same as those mentioned
above.
[0141] In one embodiment, the compound represented by the formula
(3-I) is a compound represented by the following formula (I):
##STR00098##
[0142] wherein in the formula (I),
[0143] one or more pairs of adjacent two or more of R.sub.1 to
R.sub.4 and R.sub.10 to R.sub.13 may form a substituted or
unsubstituted, saturated or unsaturated ring;
[0144] R.sub.1 to R.sub.4, R.sub.10 to R.sub.13, and R.sub.17 that
do not form the substituted or unsubstituted, saturated or
unsaturated ring are independently a hydrogen atom, a substituted
or unsubstituted aryl group including 6 to 20 ring carbon atoms or
a substituted or unsubstituted monovalent heterocyclic group
including 5 to 20 ring atoms;
[0145] two R.sub.17s may be the same or different; and
[0146] R.sub.A, R.sub.B, R.sub.C and R.sub.D are independently a
substituted or unsubstituted aryl group including 6 to 20 ring
carbon atoms or a substituted or unsubstituted monovalent
heterocyclic group including 5 to 20 ring atoms.
[0147] An explanation will be given on the feature that "one or
more pairs of two or more adjacent groups of R.sub.1 to R.sub.4 and
R.sub.10 to R.sub.13 may form a substituted or unsubstituted,
saturated or unsaturated ring."
[0148] The "one or more pairs of two or more adjacent groups of
R.sub.1 to R.sub.4 and R.sub.10 to R.sub.13" is a combination of:
for example, R.sub.1 and R.sub.2; R.sub.2 and R.sub.3; R.sub.3 and
R.sub.4; R.sub.1 and R.sub.2 and R.sub.3 or the like.
[0149] For the substituent when the "substituted or unsubstituted"
saturated or unsaturated ring is "substituted", the same
substituents as those for "substituted or unsubstituted" mentioned
later can be given.
[0150] The "saturated or unsaturated ring" means the same as
explained in the above formula (3-I).
[0151] In the compound represented by the formula (I), one or more
pairs of adjacent two or more of R.sub.1 to R.sub.4, R.sub.10 to
R.sub.13 and R.sub.17 may form a substituted or unsubstituted,
saturated or unsaturated ring and may not form a substituted or
unsubstituted, saturated or unsaturated ring. In the compound
represented by formula (I), it is preferable that one or more pairs
of adjacent two or more of R.sub.1 to R.sub.4, R.sub.10 to R.sub.13
and R.sub.17 do not form a substituted or unsubstituted, saturated
or unsaturated ring.
[0152] In one embodiment, the compound represented by the formula
(I) is a compound represented by the following formula (II):
##STR00099##
[0153] wherein in the formula (II),
[0154] R.sub.17, R.sub.A, R.sub.B, R.sub.C and R.sub.D are as
defined in the formula (I).
[0155] In one embodiment, R.sub.A, R.sub.B, R.sub.C and R.sub.D of
the compound represented by formula (I) and the compound
represented by formula (II) are independently a substituted or
unsubstituted aryl group including 6 to 20 ring carbon atoms.
[0156] In one embodiment, R.sub.A, R.sub.B, R.sub.C and R.sub.D of
the compound represented by formula (I) and the compound
represented by formula (II) are independently a substituted or
unsubstituted phenyl group.
[0157] In one embodiment, two R.sub.17s of the compound represented
by formula (I) and the compound represented by formula (II) are
independently a hydrogen atom.
[0158] A substituent in the "substituted or unsubstituted" in the
compound represented by the formula (I) and the compound
represented by the formula (II) is selected from the group
consisting of an alkyl group including 1 to 20 carbon atoms, an
aryl group including 6 to 20 ring carbon atoms, and a monovalent
heterocyclic group including 5 to 20 ring atoms.
[0159] In one embodiment, a substituent in the "substituted or
unsubstituted" in the compound represented by the formula (I) and
the compound represented by the formula (II) is an alkyl group
including 1 to 5 carbon atoms.
[0160] Specific examples of each substituent and substituents for
"substituted or unsubstituted" in the compound represented by the
formulas (I) and (II) are the same as those mentioned above.
[0161] In one embodiment, the compound represented by the formula
(3-I) is a compound represented by the following formula (1) or
(2):
##STR00100##
[0162] wherein in the formulas (1) and (2),
[0163] one or more pairs of adjacent two or more of R.sub.1 to
R.sub.7 and R.sub.10 to R.sub.16 may form a substituted or
unsubstituted, saturated or unsaturated ring;
[0164] R.sub.17, and R.sub.1 to R.sub.7 and R.sub.10 to R.sub.16
that do not form the substituted or unsubstituted, saturated or
unsaturated ring are independently a hydrogen atom, a substituted
or unsubstituted aryl group including 6 to 20 ring carbon atoms or
a substituted or unsubstituted monovalent heterocyclic group
including 5 to 20 ring atoms;
[0165] two R.sub.17s may be the same or different; and
[0166] Ar.sub.1 to Ar.sub.4 are independently a substituted or
unsubstituted aryl group including 6 to 20 ring carbon atoms.
[0167] An explanation will be given on the feature that "one or
more pairs of two or more adjacent groups of R.sub.1 to R.sub.7 and
R.sub.10 to R.sub.16 may form a substituted or unsubstituted,
saturated or unsaturated ring."
[0168] The "one or more pairs of two or more adjacent groups of
R.sub.1 to R.sub.7 and R.sub.10 to R.sub.16" is a combination of:
for example, R.sub.3 and R.sub.4; R.sub.5 and R.sub.6; R.sub.6 and
R.sub.7; R.sub.5 and R.sub.6 and R.sub.7 or the like in the formula
(1), and R.sub.1 and R.sub.2; R.sub.2 and R.sub.3; R.sub.5 and
R.sub.6; R.sub.6 and R.sub.7; R.sub.1and R.sub.2and R.sub.3 or the
like in the formula (2).
[0169] For the substituent when the "substituted or unsubstituted"
saturated or unsaturated ring is "substituted", the same
substituents as those for "substituted or unsubstituted" mentioned
later can be given.
[0170] The "saturated or unsaturated ring" means the same as
explained in the above formula (3-I).
[0171] In the formulas (1) and (2), one or more pairs of adjacent
two or more of R.sub.1 to R.sub.7 and R.sub.10 to R.sub.16 may not
form a substituted or unsubstituted, saturated or unsaturated
ring;
[0172] In one embodiment, the compound represented by the following
formula (1) or (2) is a compound represented by the following
formula (1-1) or (2-1): [0173] 2. A compound according to claim 1,
which is represented by the following formula (1-1) or (2-1):
##STR00101##
[0174] wherein in the formulas (1-1) and (2-1),
[0175] R.sub.5 to R.sub.7, R.sub.14 to R.sub.17 and Ar.sub.1 to
Ar.sub.4 are as defined in the formulas (1) and (2).
[0176] In one embodiment, in the compound represented by the
formulas (1), (2), (1-1) and (2-1), Ar.sub.1 to Ar.sub.4 are
independently a substituted or unsubstituted phenyl group.
[0177] In one embodiment, in the compound represented by the
formulas (1), (2), (1-1) and (2-1), two R.sub.17s are independently
a substituted or unsubstituted aryl group including 6 to 20 ring
carbon atoms.
[0178] In one embodiment, in the compound represented by the
formulas (1), (2), (1-1) and (2-1), two R.sub.17s are independently
a substituted or unsubstituted phenyl group.
[0179] In one embodiment, in the compound represented by the
formulas (1), (2), (1-1) and (2-1), two R.sub.17s are hydrogen
atoms.
[0180] In one embodiment, in the compound represented by the
formulas (1), (2), (1-1) and (2-1), R.sub.5 to R.sub.7 and R.sub.14
to R.sub.16 are hydrogen atoms.
[0181] In one embodiment, in the compound represented by the
formulas (1), (2), (1-1) and (2-1), a substituent in the
"substituted or unsubstituted" is selected from the group
consisting of an alkyl group including 1 to 20 carbon atoms, an
aryl group including 6 to 20 ring carbon atoms, and a monovalent
heterocyclic group including 5 to 20 ring atoms.
[0182] In one embodiment, in the compound represented by the
formulas (1), (2), (1-1) and (2-1), a substituent in the
"substituted or unsubstituted" is an alkyl group including 1 to 5
carbon atoms.
[0183] In one embodiment, in the compound represented by the
formulas (1), (2), (1-1) and (2-1), Ar.sub.1 to Ar.sub.4 are
independently a substituted or unsubstituted phenyl group; and two
R.sub.17s are hydrogen atoms.
[0184] In one embodiment, in the compound represented by the
formulas (1), (2), (1-1) and (2-1), Ar.sub.1 to Ar.sub.4 are
independently a substituted or unsubstituted phenyl group; two
R.sub.17s are independently a substituted or unsubstituted aryl
group including 6 to 20 ring carbon atoms; R.sub.5 to R.sub.7 and
R.sub.14 to R.sub.16 are hydrogen atoms; and a substituent in the
"substituted or unsubstituted" is selected from the group
consisting of an alkyl group including 1 to 20 carbon atoms, an
aryl group including 6 to 20 ring carbon atoms, and a monovalent
heterocyclic group including 5 to 20 ring atoms.
[0185] In one embodiment, in the compound represented by the
formulas (1), (2), (1-1) and (2-1), Ar.sub.1 to Ar.sub.4 are
independently a substituted or unsubstituted phenyl group; two
R.sub.17s are independently a substituted or unsubstituted phenyl
group; R.sub.s to R.sub.7 and R.sub.14 to R.sub.16 are hydrogen
atoms; and a substituent in the "substituted or unsubstituted" is
an alkyl group including 1 to 5 carbon atoms.
[0186] Specific examples of each substituent and substituents for
"substituted or unsubstituted" in the compound represented by the
formulas (1), (2), (1-1) and (2-1) are the same as those mentioned
above.
[0187] As a specific example of the compound represented by the
formulas (3-I), (3-II), (I), (II), (1), (2), (1-1) and (2-1), the
following compounds can be given, for example.
##STR00102## ##STR00103## ##STR00104## ##STR00105## ##STR00106##
##STR00107## ##STR00108## ##STR00109## ##STR00110## ##STR00111##
##STR00112## ##STR00113## ##STR00114## ##STR00115## ##STR00116##
##STR00117## ##STR00118## ##STR00119## ##STR00120## ##STR00121##
##STR00122## ##STR00123## ##STR00124## ##STR00125## ##STR00126##
##STR00127## ##STR00128## ##STR00129## ##STR00130## ##STR00131##
##STR00132## ##STR00133## ##STR00134## ##STR00135## ##STR00136##
##STR00137## ##STR00138## ##STR00139## ##STR00140## ##STR00141##
##STR00142## ##STR00143## ##STR00144## ##STR00145## ##STR00146##
##STR00147## ##STR00148## ##STR00149## ##STR00150## ##STR00151##
##STR00152## ##STR00153## ##STR00154## ##STR00155## ##STR00156##
##STR00157## ##STR00158## ##STR00159## ##STR00160## ##STR00161##
##STR00162## ##STR00163## ##STR00164## ##STR00165## ##STR00166##
##STR00167## ##STR00168## ##STR00169## ##STR00170## ##STR00171##
##STR00172## ##STR00173## ##STR00174## ##STR00175## ##STR00176##
##STR00177## ##STR00178## ##STR00179## ##STR00180## ##STR00181##
##STR00182## ##STR00183## ##STR00184## ##STR00185## ##STR00186##
##STR00187## ##STR00188## ##STR00189## ##STR00190## ##STR00191##
##STR00192## ##STR00193## ##STR00194## ##STR00195## ##STR00196##
##STR00197## ##STR00198## ##STR00199## ##STR00200## ##STR00201##
##STR00202## ##STR00203## ##STR00204## ##STR00205## ##STR00206##
##STR00207## ##STR00208## ##STR00209## ##STR00210## ##STR00211##
##STR00212## ##STR00213## ##STR00214## ##STR00215## ##STR00216##
##STR00217## ##STR00218## ##STR00219## ##STR00220## ##STR00221##
##STR00222## ##STR00223## ##STR00224## ##STR00225## ##STR00226##
##STR00227## ##STR00228## ##STR00229## ##STR00230## ##STR00231##
##STR00232## ##STR00233## ##STR00234## ##STR00235## ##STR00236##
##STR00237## ##STR00238## ##STR00239## ##STR00240## ##STR00241##
##STR00242## ##STR00243## ##STR00244## ##STR00245## ##STR00246##
##STR00247## ##STR00248## ##STR00249## ##STR00250## ##STR00251##
##STR00252## ##STR00253## ##STR00254## ##STR00255##
[0188] In the present specification, regarding "at least one
organic layer disposed between the cathode and the anode", if only
one organic layer is present between the cathode and the anode, it
means the layer, and if plural organic layers are present between
the cathode and the anode, it means at least one layer thereof.
[0189] Further, regarding "the at least one organic layer comprises
an emitting layer", if only one organic layer is present between
the cathode and the anode, it means that the layer is an emitting
layer, and if plural organic layers are present, it means that at
least one of these layers is an emitting layer.
[0190] In one embodiment, the organic EL device has a
hole-transporting layer between the anode and the emitting
layer.
[0191] In one embodiment, the organic EL device has an
electron-transporting layer between the cathode and the emitting
layer.
[0192] In the present specification, regarding the "at least one
layer between the emitting layer and the anode", if only one
organic layer is present between the emitting layer and the anode,
it means that layer, and if plural organic layers are present, it
means at least one layer thereof. For example, if two or more
organic layers are present between the emitting layer and the
anode, an organic layer nearer to the emitting layer is called the
"hole-transporting layer", and an organic layer nearer to the anode
is called the "hole-injecting layer". Each of the
"hole-transporting layer" and the "hole-injecting layer" may be a
single layer or may be formed of two or more layers. One of these
layers may be a single layer and the other may be formed of two or
more layers.
[0193] Similarly, regarding the "at least one layer between the
emitting layer and the cathode", if only one organic layer is
present between the emitting layer and the cathode, it means that
layer, and if plural organic layers are present, it means at least
one layer thereof. For example, if two or more organic layers are
present between the emitting layer and the cathode, an organic
layer nearer to the emitting layer is called the
"electron-transporting layer", and an organic layer nearer to the
cathode is called the "electron-injecting layer". Each of the
"electron-transporting layer" and the "electron-injecting layer"
may be a single layer or may be formed of two or more layers. One
of these layers may be a single layer and the other may be formed
of two or more layers.
[0194] In one embodiment, the "at least one organic layer"
mentioned above comprises the emitting layer, the emitting layer
comprises a compound represented by the formulas (1-1) and (1-3) or
a compound represented by the formulas (1-2) and (1-3). The
compound represented by the formulas (1-1) and (1-3) or a compound
represented by the formulas (1-2) and (1-3) can function as a
fluorescent emitting material and can enhance the luminous
efficiency of the organic EL device.
[0195] In one embodiment, the "at least one organic layer"
mentioned above comprises the emitting layer, and the emitting
layer comprises a compound represented by the formula (3-I). The
compound represented by the formula (3-I) can function as a
fluorescent emitting material and can enhance the luminous
efficiency of the organic EL device.
[0196] In one embodiment, the "at least one organic layer"
mentioned above comprises the emitting layer, the emitting layer
comprises a compound represented by the formula (I). The compound
represented by the formula (I) can function as a fluorescent
emitting material and can enhance the luminous efficiency of the
organic EL device.
[0197] In one embodiment, the "at least one organic layer"
mentioned above comprises the emitting layer, the emitting layer
comprises a compound represented by the formula (1) or (2). The
compound represented by the formula (1) and (2) can function as a
fluorescent emitting material and can enhance the luminous
efficiency of the organic EL device.
[0198] In one embodiment, the "at least one organic layer"
mentioned above comprises the emitting layer, the emitting layer
comprises a compound represented by the formula (1-1) or (2-1). The
compound represented by the formula (1-1) and (2-1) can function as
a fluorescent emitting material and can enhance the luminous
efficiency of the organic EL device.
[0199] In one embodiment, the "at least one organic layer"
mentioned above comprises a compound represented by the formulas
(1-1) and (1-3) or a compound represented by the formulas (1-2) and
(1-3). The compound represented by the formulas (1-1) and (1-3) or
the compound represented by the formulas (1-2) and (1-3) can
function as a fluorescent emitting material and can enhance the
luminous efficiency of the organic EL device.
[0200] In one embodiment, the "at least one organic layer"
mentioned above comprises a compound represented by formula (3-I).
The compound represented by the formula (3-I) is comprised as an
emitting material and can enhance the luminous efficiency of the
organic EL device.
[0201] In one embodiment, the "at least one organic layer"
mentioned above comprises a compound represented by formula (I).
The compound represented by the formula (I) is comprised as an
emitting material and can enhance the luminous efficiency of the
organic EL device.
[0202] In one embodiment, the "at least one organic layer"
mentioned above comprises a compound represented by formula (1) or
(2). The compound represented by the formula (1) and (2) is
comprised as an emitting material and can enhance the luminous
efficiency of the organic EL device.
[0203] In one embodiment, the "at least one organic layer"
mentioned above comprises a compound represented by formula (1-1)
or (2-1). The compound represented by the formula (1-1) and (2-1)
is comprised as an emitting material and can enhance the luminous
efficiency of the organic EL device.
[0204] In one embodiment, the emitting layer further comprises a
compound represented by the following formula (10) (hereinafter may
be referred to as the compound (10)):
##STR00256##
[0205] wherein the formula (10),
[0206] one or more pairs of two or more adjacent R.sub.101 to
R.sub.110 may form a substituted or unsubstituted, saturated or
unsaturated ring;
[0207] R.sub.101 to R.sub.110 that do not form the substituted or
unsubstituted, saturated or unsaturated ring are independently a
hydrogen atom, a substituted or unsubstituted alkyl group including
1 to 50 carbon atoms, a substituted or unsubstituted haloalkyl
group including 1 to 50 carbon atoms, a substituted or
unsubstituted alkenyl group including 2 to 50 carbon atoms, a
substituted or unsubstituted alkynyl group including 2 to 50 carbon
atoms, a substituted or unsubstituted cycloalkyl group including 3
to 50 ring carbon atoms, a substituted or unsubstituted alkoxy
group including 1 to 50 carbon atoms, a substituted or
unsubstituted alkylene group including 1 to 50 carbon atoms, a
substituted or unsubstituted aryloxy group including 6 to 50 ring
carbon atoms, a substituted or unsubstituted arylthio group
including 6 to 50 ring carbon atoms, a substituted or unsubstituted
aralkyl group including 7 to 50 carbon atoms,
--Si(R.sub.121)(R.sub.122)(R.sub.123), --C(.dbd.O)R.sub.124,
--COOR.sub.125, --N(R.sub.126)(R.sub.127), a halogen atom, a cyano
group, a nitro group, a substituted or unsubstituted aryl group
including 6 to 50 ring carbon atoms, a substituted or unsubstituted
monovalent heterocyclic group including 5 to 50 ring atoms, or a
group represented by the following formula (31);
[0208] R.sub.121 to R.sub.127 are independently a hydrogen atom, a
substituted or unsubstituted alkyl group including 1 to 50 carbon
atoms, a substituted or unsubstituted cycloalkyl group including 3
to 50 ring carbon atoms, a substituted or unsubstituted aryl group
including 6 to 50 ring carbon atoms or a substituted or
unsubstituted monovalent heterocyclic group including 5 to 50 ring
atoms; when each of R.sub.121 to R.sub.127 is present in plural,
each of the plural R.sub.121 to R.sub.127 may be the same or
different;
[0209] provided that at least one of R.sub.101 to R.sub.110 that do
not form the substituted or unsubstituted, saturated or unsaturated
ring is a group represented by the following formula (31). If two
or more groups represented by the formula (31) are present, each of
these groups may be the same or different;
-L.sub.101-Ar.sub.101 (31)
[0210] wherein in the formula (31),
[0211] L.sub.101 is a single bond, a substituted or unsubstituted
arylene group including 6 to 30 ring carbon atoms or a substituted
or unsubstituted divalent heterocyclic group including 5 to 30 ring
atoms;
[0212] Ar.sub.101 is a substituted or unsubstituted aryl group
including 6 to 50 ring carbon atoms or a substituted or
unsubstituted monovalent heterocyclic group including 5 to 50 ring
atoms.
[0213] Specific examples of each substituent, substituents for
"substituted or unsubstituted" and the halogen atom in the compound
(10) are the same as those mentioned above.
[0214] An explanation will be given on "one or more pairs of two or
more adjacent R.sub.101 to R.sub.101 may form a substituted or
unsubstituted, saturated or unsaturated ring".
[0215] The "one pair of two or more adjacent R.sub.101 to
R.sub.110" is a combination of R.sub.101 and R.sub.102, R.sub.102
and R.sub.103, R.sub.103 and R.sub.104, R.sub.105 and R.sub.106,
R.sub.106 and R.sub.107, R.sub.107 and R.sub.108, R.sub.108 and
R.sub.109, R.sub.101 and R.sub.102 and R.sub.103 or the like, for
example.
[0216] The substituent in "substituted" in the "substituted or
unsubstituted" for the saturated or unsaturated ring is the same as
those for "substituted or unsubstituted" mentioned in the formula
(10).
[0217] The "saturated or unsaturated ring" means, when R.sub.101
and R.sub.102 form a ring, for example, a ring formed by a carbon
atom with which R.sub.101 is bonded, a carbon atom with which
R.sub.102 is bonded and one or more arbitrary elements.
Specifically, when a ring is formed by R.sub.101 and R.sub.102,
when an unsaturated ring is formed by a carbon atom with which
R.sub.101 is bonded, a carbon atom with R.sub.102 is bonded and
four carbon atoms, the ring formed by R.sub.101 and R.sub.102 is a
benzene ring.
[0218] The "arbitrary element" is preferably a C element, a N
element, an O element and a S element. In the arbitrary element (C
element or N element, for example), atomic bondings that do not
form a ring may be terminated by a hydrogen atom, or the like.
[0219] The "one or more arbitrary element" is preferably 2 or more
and 15 or less, more preferably 3 or more and 12 or less, and
further preferably 3 or more and 5 or less arbitrary elements.
[0220] For example, R.sub.101 and R.sub.102 may form a ring, and
simultaneously, R.sub.105 and R.sub.106 may form a ring. In this
case, the compound represented by the formula (10) is a compound
represented by the following formula (10A), for example:
##STR00257##
[0221] In one embodiment, R.sub.101 to R.sub.110 are independently
a hydrogen atom, a substituted or unsubstituted alkyl group
including 1 to 50 carbon atoms, a substituted or unsubstituted aryl
group including 6 to 50 ring carbon atoms, a substituted or
unsubstituted heterocyclic group including 5 to 50 ring atoms or a
group represented by the formula (31).
[0222] In one embodiment, R.sub.101 to R.sub.110 are independently
a hydrogen atom, a substituted or unsubstituted aryl group
including 6 to 50 ring carbon atoms, a substituted or unsubstituted
heterocyclic group including 5 to 50 ring atoms or a group
represented by the formula (31).
[0223] In one embodiment, R.sub.101 to R.sub.110 are independently
a hydrogen atom, a substituted or unsubstituted aryl group
including 6 to 18 ring carbon atoms, a substituted or unsubstituted
heterocyclic group including 5 to 18 ring atoms or a group
represented by the formula (31).
[0224] In one embodiment, at least one of R.sub.109 and R.sub.110
is a group represented by the formula (31).
[0225] In one embodiment, R.sub.109 and R.sub.110 are independently
a group represented by the formula (31).
[0226] In one embodiment, the compound (10) is a compound
represented by the following formula (10-1):
##STR00258##
[0227] wherein in the formula (10-1), R.sub.101 to R.sub.108,
L.sub.101 and Ar.sub.101 are as defined in the formula (10).
[0228] In one embodiment, the compound (10) is a compound
represented by the following formula (10-2):
##STR00259##
[0229] wherein in the formula (10-2), R.sub.101, R.sub.103 to
R.sub.108, L.sub.101 and Ar.sub.101 are as defined in the formula
(10).
[0230] In one embodiment, the compound (10) is a compound
represented by the following formula (10-3):
##STR00260##
[0231] wherein in the formula (10-3),
[0232] R.sub.101A to R.sub.108A are independently a hydrogen atom
or a substituted or unsubstituted aryl group including 6 to 50 ring
carbon atoms;
[0233] L.sub.101A is a single bond or a substituted or
unsubstituted arylene group including 6 to 30 ring carbon atoms,
and the two L.sub.101As may be the same or different;
[0234] Ar.sub.101A is a substituted or unsubstituted aryl group
including 6 to 50 ring carbon atoms, and the two Ar.sub.101As may
be the same or different.
[0235] In one embodiment, the compound (10) is a compound
represented by the following formula (10-4):
##STR00261##
[0236] wherein in the formula (10-4),
[0237] L.sub.101 and Ar.sub.101 are as defined in the formula
(10);
[0238] R.sub.101A to R.sub.108A are independently a hydrogen atom
or a substituted or unsubstituted aryl group including 6 to 50 ring
carbon atoms;
[0239] X.sub.11 is O, S, or N(R.sub.61);
[0240] R.sub.61 is a hydrogen atom, a substituted or unsubstituted
alkyl group including 1 to 50 carbon atoms or a substituted or
unsubstituted aryl group including 6 to 50 ring carbon atoms;
[0241] one of R.sub.62 to R.sub.69 is an atomic bonding that is
bonded with L.sub.101;
[0242] one or more pairs of adjacent R.sub.62 to R.sub.69 that are
not bonded with L.sub.101 may be bonded with each other to form a
substituted or unsubstituted, saturated or unsaturated ring;
and
[0243] R.sub.62 to R.sub.69 that are not bonded with L.sub.101 and
do not form the substituted or unsubstituted, saturated or
unsaturated ring are independently a hydrogen atom, a substituted
or unsubstituted alkyl group including 1 to 50 carbon atoms or a
substituted or unsubstituted aryl group including 6 to 50 ring
carbon atoms.
[0244] In one embodiment, the compound (10) is a compound
represented by the following formula (10-4A):
##STR00262##
[0245] wherein in the formula (10-4A),
[0246] L.sub.101 and Ar.sub.101 are as defined in the formula
(10);
[0247] R.sub.101A to R.sub.108A are independently a hydrogen atom
or a substituted or unsubstituted aryl group including 6 to 50 ring
carbon atoms;
[0248] X.sub.11 is O, S or N(R.sub.61);
[0249] R.sub.61 is a hydrogen atom, a substituted or unsubstituted
alkyl group including 1 to 50 carbon atoms or a substituted or
unsubstituted aryl group including 6 to 50 ring carbon atoms;
[0250] one or more pairs of adjacent two or more of R.sub.62A to
R.sub.69A may form a substituted or unsubstituted, saturated or
unsaturated ring, and adjacent two of R.sub.62A to R.sub.69A form a
ring represented by the following formula (10-4A-1); and
[0251] R.sub.62A to R.sub.69A that do not form a substituted or
unsubstituted, saturated or unsaturated ring are independently a
hydrogen atom, a substituted or unsubstituted alkyl group including
1 to 50 carbon atoms or a substituted or unsubstituted aryl group
including 6 to 50 ring carbon atoms.
##STR00263##
[0252] wherein in the formula (10-4A-1),
[0253] each of the two atomic bondings * is bonded with adjacent
two of R.sub.62A to R.sub.69A;
[0254] one of R.sub.70 to R.sub.73 is an atomic bonding that is
bonded with L.sub.101; and R.sub.70 to R.sub.73 that are not bonded
with L.sub.101 are independently a hydrogen atom, a substituted or
unsubstituted alkyl group including 1 to 50 carbon atoms or a
substituted or unsubstituted aryl group including 6 to 50 ring
carbon atoms.
[0255] In one embodiment, the compound (10) is a compound
represented by the following formula (10-6):
##STR00264##
[0256] wherein in the formula (10-6),
[0257] L.sub.101 and Ar.sub.101 are as defined in the formula
(10);
[0258] R.sub.101A to R.sub.108A are as defined in the formula
(10-4);
[0259] R.sub.66 to R.sub.69 are as defined in the formula (10-4);
and
[0260] X.sub.12 is O or S.
[0261] In one embodiment, the compound represented by the formula
(10-6) is a compound represented by the following formula
(10-6H):
##STR00265##
[0262] wherein in the formula (10-6H),
[0263] L.sub.101 and Ar.sub.101 are as defined in the formula
(10);
[0264] R.sub.66 to R.sub.69 are as defined in the formula (10-4);
and
[0265] X.sub.12 is O or S.
[0266] In one embodiment, the compound represented by the formulas
(10-6) and (10-6H) is a compound represented by the following
formula (10-6Ha):
##STR00266##
[0267] wherein in the formula (10-6Ha),
[0268] L.sub.101 and Ar.sub.101 are as defined in the formula (10);
and
[0269] X.sub.12 is O or S.
[0270] In one embodiment, the compound represented by the formulas
(10-6), (10-6H) and (10-6Ha) is a compound represented by the
following formula (10-6Ha-1) or (10-6Ha-2):
##STR00267##
[0271] wherein in the formula (10-6Ha-1) and (10-6Ha-2),
[0272] L.sub.101 and Ar.sub.101 are as defined in the formula (10);
and
[0273] X.sub.12 is O or S.
[0274] In one embodiment, the compound (10) is a compound
represented by the following formula (10-7):
##STR00268##
[0275] wherein in the formula (10-7),
[0276] L.sub.101 and Ar.sub.101 are as defined in the formula
(10);
[0277] R.sub.101A to R.sub.108A are as defined in the formula
(10-4);
[0278] X.sub.11 is as defined in the formula (10-4); and
[0279] R.sub.62 to R.sub.69 are as defined in the formula (10-4),
provided that any one pair of R.sub.66 and R.sub.67, R.sub.67 and
R.sub.68, and R.sub.68 and R.sub.69 are bonded with each other to
form a substituted or unsubstituted, saturated or unsaturated
ring.
[0280] In one embodiment, the compound (10) is a compound
represented by the following formula (10-7H):
##STR00269##
[0281] wherein in the formula (10-7H),
[0282] L.sub.101 and Ar.sub.101 are as defined in the formula
(10);
[0283] X.sub.11 is as defined in the formula (10-4); and
[0284] R.sub.62 to R.sub.69 are as defined in the formula (10-4),
provided that any one pair of R.sub.66 and R.sub.67, R.sub.67 and
R.sub.68, and R.sub.68 and R.sub.69 are bonded with each other to
form a substituted or unsubstituted, saturated or unsaturated
ring.
[0285] In one embodiment, the compound (10) is a compound
represented by the following formula (10-8):
##STR00270##
[0286] wherein in the formula (10-8),
[0287] L.sub.101 and Ar.sub.101 are as defined in the formula
(10);
[0288] R.sub.101A to R.sub.108A are as defined in the formula
(10-4);
[0289] X.sub.12 is O or S; and
[0290] R.sub.66 to R.sub.69 are as defined in the formula (10-4),
provided that any one pair of R.sub.66 and R.sub.67, R.sub.67 and
R.sub.68, as well as R.sub.68 and R.sub.69 are bonded with each
other to form a substituted or unsubstituted, saturated or
unsaturated ring.
[0291] In one embodiment, the compound represented by the formula
(10-8) is a compound represented by the following formula
(10-8H):
##STR00271##
[0292] In the formula (10-8H), L.sub.101 and Ar.sub.101 are as
defined in the formula (10).
[0293] R.sub.66 to R.sub.69 are as defined in the formula (10-4),
provided that any one pair of R.sub.66 and R.sub.67, R.sub.67 and
R.sub.68, as well as R.sub.68 and R.sub.69 are bonded with each
other to form a substituted or unsubstituted, saturated or
unsaturated ring. Any one pair of R.sub.66 and R.sub.67, R.sub.67
and R.sub.68, as well as R.sub.68 and R.sub.69 may preferably be
bonded with each other to form an unsubstituted benzene ring;
and
[0294] X.sub.12 is O or S.
[0295] In one embodiment, as for the compound represented by the
formula (10-7), (10-8) or (10-8H), any one pair of R.sub.66 and
R.sub.67, R.sub.67 and R.sub.68, as well as R.sub.68 and R.sub.69
are bonded with each other to form a ring represented by the
following formula (10-8-1) or (10-8-2), and R.sub.66 to R.sub.69
that do not form the ring represented by the formula (10-8-1) or
(10-8-2) do not form a substituted or unsubstituted, saturated or
unsaturated ring.
##STR00272##
[0296] wherein in the formulas (10-8-1) and (10-8-2),
[0297] the two atomic bondings * are independently bonded with one
pair of R.sub.66 and R.sub.67, R.sub.67 and R.sub.68, or R.sub.68
and R.sub.69;
[0298] R.sub.80 to R.sub.83 are independently a hydrogen atom, a
substituted or unsubstituted alkyl group including 1 to 50 carbon
atoms or a substituted or unsubstituted aryl group including 6 to
50 ring carbon atoms; and
[0299] X.sub.13 is O or S.
[0300] In one embodiment, the compound (10) is a compound
represented by the following formula (10-9):
##STR00273##
[0301] wherein in the formula (10-9),
[0302] L.sub.101 and Ar.sub.101 are as defined in the formula
(10);
[0303] R.sub.101A to R.sub.108A are as defined in the formula
(10-4);
[0304] R.sub.66 to R.sub.69 are as defined in the formula (10-4),
provided that R.sub.66 and R.sub.67, R.sub.67 and R.sub.68, as well
as R.sub.68 and R.sub.69 are not bonded with each other and do not
form a substituted or unsubstituted, saturated or unsaturated ring;
and
[0305] X.sub.12 is O or S.
[0306] In one embodiment, the compound (10) is selected from the
group consisting of compounds represented by the following formulas
(10-10-1) to (10-10-4).
##STR00274##
[0307] In the formulas (10-10-1) to (10-10-4), L.sub.101A,
Ar.sub.101A and R.sub.101A to R.sub.108A are as defined in the
formula (10-3).
[0308] In one embodiment, the compound represented by the above
formulas (10-10-1) to (10-10-4) is a compound represented by the
following formulas (10-10-1H) to (10-10-4H):
##STR00275##
[0309] In the formulas (10-10-1H) to (10-10-4H), L.sub.101A and
Ar.sub.101A are as defined in the formula (10-3).
[0310] As for the compound represented by the formula (10), the
following compounds can be given as specific examples.
##STR00276## ##STR00277## ##STR00278## ##STR00279## ##STR00280##
##STR00281## ##STR00282## ##STR00283## ##STR00284## ##STR00285##
##STR00286## ##STR00287## ##STR00288## ##STR00289## ##STR00290##
##STR00291## ##STR00292## ##STR00293## ##STR00294## ##STR00295##
##STR00296## ##STR00297## ##STR00298## ##STR00299## ##STR00300##
##STR00301## ##STR00302## ##STR00303## ##STR00304## ##STR00305##
##STR00306## ##STR00307## ##STR00308## ##STR00309## ##STR00310##
##STR00311## ##STR00312## ##STR00313## ##STR00314## ##STR00315##
##STR00316## ##STR00317## ##STR00318## ##STR00319## ##STR00320##
##STR00321## ##STR00322## ##STR00323## ##STR00324## ##STR00325##
##STR00326## ##STR00327## ##STR00328## ##STR00329## ##STR00330##
##STR00331## ##STR00332## ##STR00333## ##STR00334## ##STR00335##
##STR00336## ##STR00337## ##STR00338## ##STR00339## ##STR00340##
##STR00341## ##STR00342## ##STR00343## ##STR00344## ##STR00345##
##STR00346## ##STR00347## ##STR00348## ##STR00349## ##STR00350##
##STR00351## ##STR00352## ##STR00353## ##STR00354## ##STR00355##
##STR00356## ##STR00357## ##STR00358## ##STR00359## ##STR00360##
##STR00361## ##STR00362## ##STR00363## ##STR00364## ##STR00365##
##STR00366## ##STR00367## ##STR00368## ##STR00369## ##STR00370##
##STR00371## ##STR00372## ##STR00373## ##STR00374## ##STR00375##
##STR00376## ##STR00377## ##STR00378## ##STR00379## ##STR00380##
##STR00381## ##STR00382## ##STR00383## ##STR00384## ##STR00385##
##STR00386## ##STR00387## ##STR00388## ##STR00389## ##STR00390##
##STR00391## ##STR00392## ##STR00393## ##STR00394## ##STR00395##
##STR00396## ##STR00397## ##STR00398## ##STR00399##
[0311] In one embodiment, when the emitting layer comprises the
compound represented by the formulas (1-1) and (1-3) or the
compound represented by the formulas (1-2) and (1-3) and the
compound represented by the formula (10), the content of the
compound represented by the formulas (1-1) and (1-3) or the
compound represented by the following formulas (1-2) and (1-3) is
preferably 1 mass % or more and 20 mass % or less relative to the
entire emitting layer.
[0312] In one embodiment, when the emitting layer comprises the
compound represented by the formulas (1-1) and (1-3) or the
compound represented by the formulas (1-2) and (1-3) and the
compound represented by the formula (10), the content of the
compound represented by the formula (10) is preferably 80 mass % or
more and 99 mass % or less relative to the entire emitting
layer.
[0313] In one embodiment, when the emitting layer comprises the
compound represented by the formula (3-I) and the compound
represented by the formula (10), the content of the compound
represented by the formula (3-I) is preferably 1 mass % or more and
20 mass % or less relative to the entire emitting layer.
[0314] In one embodiment, when the emitting layer comprises the
compound represented by the formula (3-I) and the compound
represented by the formula (10), the content of the compound
represented by the formula (10) is preferably 80 mass % or more and
99 mass % or less relative to the entire emitting layer.
[0315] In one embodiment, when the emitting layer comprises the
compound represented by the formula (I) and the compound
represented by the formula (10), the content of the compound
represented by the formula (I) is preferably 1 mass % or more and
20 mass % or less relative to the entire emitting layer.
[0316] In one embodiment, when the emitting layer comprises the
compound represented by the formula (I) and the compound
represented by the formula (10), the content of the compound
represented by the formula (10) is preferably 80 mass % or more and
99 mass % or less relative to the entire emitting layer.
[0317] In one embodiment, when the emitting layer comprises the
compound represented by the formula (1) or (2), and the compound
represented by the formula (10), the content of the compound
represented by the formula (1) or (2) is preferably 1 mass % or
more and 20 mass % or less relative to the entire emitting
layer.
[0318] In one embodiment, when the emitting layer comprises the
compound represented by the formula (1) or (2) and the compound
represented by the formula (10), the content of the compound
represented by the formula (10) is preferably 80 mass % or more and
99 mass % or less relative to the entire emitting layer.
[0319] In one embodiment, when the emitting layer comprises the
compound represented by the formula (1-1) or (2-1), and the
compound represented by the formula (10), the content of the
compound represented by the formula (1-1) or (2-1) is preferably 1
mass % or more and 20 mass % or less relative to the entire
emitting layer.
[0320] In one embodiment, when the emitting layer comprises the
compound represented by the formula (1-1) or (2-1) and the compound
represented by the formula (10), the content of the compound
represented by the formula (10) is preferably 80 mass % or more and
99 mass % or less relative to the entire emitting layer.
[0321] An explanation will be made on the layer configuration of
the organic EL device according to one aspect of the invention.
[0322] An organic EL device according to one aspect of the
invention comprises an organic layer between a pair of electrodes
consisting of a cathode and an anode. The organic layer comprises
at least one layer composed of an organic compound. Alternatively,
the organic layer is formed by laminating a plurality of layers
composed of an organic compound. The organic layer may further
comprise an inorganic compound in addition to the organic
compound.
[0323] In one embodiment, at least one of the organic layers is an
emitting layer. The organic layer may be constituted, for example,
as a single emitting layer, or may comprise other layers which can
be adopted in the layer structure of the organic EL device. The
layer that can be adopted in the layer structure of the organic EL
device is not particularly limited, but examples thereof include a
hole-transporting zone (a hole-transporting layer, a hole-injecting
layer, an electron-blocking layer, an exciton-blocking layer,
etc.), an emitting layer, a spacing layer, and an
electron-transporting zone (electron-transporting layer,
electron-injecting layer, hole-blocking layer, etc.) provided
between the cathode and the emitting layer.
[0324] The organic EL device according to one aspect of the
invention may be, for example, a fluorescent or phosphorescent
monochromatic light emitting device or a fluorescent/phosphorescent
hybrid white light emitting device. Further, it may be a simple
type device having a single emitting unit or a tandem type device
having a plurality of emitting units.
[0325] The "emitting unit" in the specification is the smallest
unit that comprises organic layers, in which at least one of the
organic layers is an emitting layer and light is emitted by
recombination of injected holes and electrons.
[0326] In addition, the "emitting layer" described in the present
specification is an organic layer having an emitting function. The
emitting layer is, for example, a phosphorescent emitting layer, a
fluorescent emitting layer or the like, and may be a single layer
or a stack of a plurality of layers.
[0327] The emitting unit may be a stacked type unit having a
plurality of phosphorescent emitting layers or fluorescent emitting
layers. In this case, for example, a spacing layer for preventing
excitons generated in the phosphorescent emitting layer from
diffusing into the fluorescent emitting layer may be provided
between the respective light-emitting layers.
[0328] As the simple type organic EL device, a device configuration
such as anode/emitting unit/cathode can be given.
[0329] The representative layer structure of the emitting unit is
shown below. The layers in parentheses are provided arbitrarily.
[0330] (a) (Hole-injecting layer/) Hole-transporting
layer/Fluorescent emitting layer (/Electron-transporting
layer/Electron-injecting layer) [0331] (b) (Hole-injecting layer/)
Hole-transporting layer/Phosphorescent emitting layer
(/Electron-transporting layer/Electron-injecting layer) [0332] (c)
(Hole-injecting layer/) Hole-transporting layer/First fluorescent
emitting layer/Second fluorescent emitting layer
(/Electron-transporting layer/Electron-injecting layer) [0333] (d)
(Hole-injecting layer/) Hole-transporting layer/First
phosphorescent layer/Second phosphorescent layer
(/Electron-transporting layer/Electron-injecting layer) [0334] (e)
(Hole-injecting layer/) Hole-transporting layer/Phosphorescent
emitting layer/Spacing layer/Fluorescent emitting layer
(/Electron-transporting layer/Electron-injecting layer) [0335] (f)
(Hole-injecting layer/) Hole-transporting layer/First
phosphorescent emitting layer/Second phosphorescent emitting
layer/Spacing layer/Fluorescent emitting layer
(/Electron-transporting layer/Electron-injecting layer) [0336] (g)
(Hole-injecting layer/) Hole-transporting layer/First
phosphorescent layer/Spacing layer/Second phosphorescent emitting
layer/Spacing layer/Fluorescent emitting layer
(/Electron-transporting layer/Electron-injecting layer) [0337] (h)
(Hole-injecting layer/) Hole-transporting layer/Phosphorescent
emitting layer/Spacing layer/First fluorescent emitting
layer/Second fluorescent emitting layer (/Electron-transporting
Layer/Electron-injecting Layer) [0338] (i) (Hole-injecting layer/)
Hole-transporting layer/Electron-blocking layer/Fluorescent
emitting layer (/Electron-transporting layer/Electron-injecting
layer) [0339] (j) (Hole-injecting layer/) Hole-transporting
layer/Electron-blocking layer/Phosphorescent emitting layer
(/Electron-transporting layer/Electron-injecting layer) [0340] (k)
(Hole-injecting layer/) Hole-transporting layer/Exciton-blocking
layer/Fluorescent emitting layer (/Electron-transporting
layer/Electron-injecting layer) [0341] (l) (Hole-injecting layer/)
Hole-transporting layer/Exciton-blocking layer/Phosphorescent
emitting layer (/Electron-transporting layer/Electron-injecting
layer) [0342] (m) (Hole-injecting layer/) First hole-transporting
Layer/Second hole-transporting Layer/Fluorescent emitting layer
(/Electron-transporting layer/electron-injecting Layer) [0343] (n)
(Hole-injecting layer/) First hole-transporting layer/Second
hole-transporting layer/fluorescent emitting layer (/First
electron-transporting layer/Second electron-transporting
layer/Electron-injection layer) [0344] (o) (Hole-injecting layer/)
First hole-transporting layer /Second hole-transporting
layer/Phosphorescent emitting layer (/Electron-transporting
layer/Electron-injecting Layer) (p) (Hole-injecting layer/) First
hole-transporting layer/Second hole-transporting
layer/Phosphorescent emitting layer (/First electron-transporting
Layer/Second electron-transporting layer /Electron-injecting layer)
[0345] (q) (Hole-injecting layer/) Hole-transporting
layer/Fluorescent emitting layer/Hole-blocking layer
(/Electron-transporting layer/Electron-injecting layer) [0346] (r)
(Hole-injecting layer/) Hole-transporting layer/Phosphorescent
emitting layer/Hole-blocking layer (/Electron-transport
layer/Electron-injecting layer) [0347] (s) (Hole-injecting layer/)
Hole-transporting layer/Fluorescent emitting layer/Exciton-blocking
layer (/Electron-transporting layer/Electron-injecting layer)
[0348] (t) (Hole-injecting layer/) Hole-transporting
layer/Phosphorescent emitting layer/Exciton-blocking layer
(/Electron-transporting layer/Electron-injecting layer)
[0349] The layer structure of the organic EL device according to
one aspect of the invention is not limited thereto. For example,
when the organic EL device has a hole-injecting layer and a
hole-transporting layer, it is preferred that a hole-injecting
layer be provided between the hole-transporting layer and the
anode. Further, when the organic EL device has an
electron-injecting layer and an electron-transporting layer, it is
preferred that an electron-injecting layer be provided between the
electron-transporting layer and the cathode. Further, each of the
hole-injecting layer, the hole-transporting layer, the
electron-transporting layer and the electron-injecting layer may be
formed of a single layer or be formed of a plurality of layers.
[0350] The plurality of phosphorescent emitting layers, and the
plurality of the phosphorescent emitting layer and the fluorescent
emitting layer may be emitting layers that emit mutually different
colors. For example, the emitting unit (f) may include a
hole-transporting layer/first phosphorescent layer (red light
emission)/second phosphorescent emitting layer (green light
emission)/spacing layer/fluorescent emitting layer (blue light
emission)/electron-transporting layer.
[0351] An electron-blocking layer may be provided between each
light emitting layer and the hole-transporting layer or the spacing
layer. Further, a hole-blocking layer may be provided between each
emitting layer and the electron-transporting layer. By providing
the electron-blocking layer or the hole-blocking layer, it is
possible to confine electrons or holes in the emitting layer,
thereby to improve the recombination probability of carriers in the
emitting layer, and to improve light emitting efficiency.
[0352] As a representative device configuration of a tandem type
organic EL device, for example, a device configuration such as
anode/first emitting unit/intermediate layer/second emitting
unit/cathode can be given.
[0353] The first emitting unit and the second emitting unit are
independently selected from the above-mentioned emitting units, for
example.
[0354] The intermediate layer is also generally referred to as an
intermediate electrode, an intermediate conductive layer, a charge
generating layer, an electron withdrawing layer, a connecting
layer, a connector layer, or an intermediate insulating layer. The
intermediate layer is a layer that supplies electrons to the first
emitting unit and holes to the second emitting unit, and can be
formed from known materials.
[0355] FIG. 1 shows a schematic view of one example of the layer
structure of the organic EL device. An organic EL device 1 has a
substrate 2, an anode 3, a cathode 4, and an emitting unit (organic
layer) 10 arranged between the anode 3 and the cathode 4. The
emitting unit 10 has at least one emitting layer 5.
[0356] A hole-transporting zone (hole-injecting layer,
hole-transporting layer, etc.) 6 may be formed between the emitting
layer 5 and the anode 3, and an electron-transporting zone
(electron-injecting layer, electron-transporting layer, etc.) 7 may
be formed between the emitting layer 5 and the cathode 4. An
electron-blocking layer (not shown) may be provided on the anode 3
side of the emitting layer 5, and a hole-blocking layer (not shown)
may be provided on the cathode 4 side of the emitting layer 5. Due
to such a configuration, electrons or holes are confined in the
emitting layer 5, whereby efficiency of formation of excitons in
the emitting layer 5 can be further enhanced.
[0357] FIG. 2 shows a schematic view of another example of the
layer configuration of the organic EL device. In an organic EL
device 11 shown in FIG. 2, in an emitting unit 20, the
hole-transporting layer in the hole-transporting zone 6 and the
electron-transporting layer in the electron-transporting zone 7 of
the emitting unit 10 of the organic EL device 1 in FIG. 1 are
respectively composed of two layers. The hole-transporting zone 6
has a first hole-transporting layer 6a on the anode side and a
second hole-transporting layer 6b on the cathode side. The
electron-transporting zone 7 has a first electron-transporting
layer 7a on the anode side and a second hole-transporting layer 7b
on the cathode side. As for the other numerical references, since
they are the same as those in FIG. 1, an explanation is
omitted.
[0358] Hereinbelow, an explanation will be made on function,
materials, etc. of each layer constituting the organic EL device
described in the present specification.
(Substrate)
[0359] The substrate is used as a support of the organic EL device.
The substrate preferably has a light transmittance of 50% or more
in the visible light region with a wavelength of 400 to 700 nm, and
a smooth substrate is preferable. Examples of the material of the
substrate include soda-lime glass, aluminosilicate glass, quartz
glass, plastic and the like. As a substrate, a flexible substrate
can be used. The flexible substrate means a substrate that can be
bent (flexible), and examples thereof include a plastic substrate
and the like. Specific examples of the material for forming the
plastic substrate include polycarbonate, polyallylate, polyether
sulfone, polypropylene, polyester, polyvinyl fluoride, polyvinyl
chloride, polyimide, polyethylene naphthalate and the like. Also,
an inorganic vapor deposited film can be used.
(Anode)
[0360] As the anode, for example, it is preferable to use a metal,
an alloy, a conductive compound, a mixture thereof or the like and
having a high work function (specifically, 4.0 eV or more).
Specific examples of the material of the anode include indium
oxide-tin oxide (ITO: Indium Tin Oxide), indium oxide-tin oxide
containing silicon or silicon oxide, indium oxide-zinc oxide,
indium oxide containing tungsten oxide or zinc oxide, graphene and
the like. In addition, it is also possible to use gold, silver,
platinum, nickel, tungsten, chromium, molybdenum, iron, cobalt,
copper, palladium, titanium, and nitrides of these metals (e.g.
titanium oxide).
[0361] The anode is normally formed by depositing these materials
on the substrate by a sputtering method. For example, indium
oxide-zinc oxide can be formed by a sputtering method by using a
target in which 1 to 10 mass % zinc oxide is added relative to
indium oxide. Further, indium oxide containing tungsten oxide or
zinc oxide can be formed by a sputtering method by using a target
in which 0.5 to 5 mass % of tungsten oxide or 0.1 to 1 mass % of
zinc oxide is added relative to indium oxide.
[0362] As the other methods for forming the anode, a vacuum
deposition method, a coating method, an inkjet method, a spin
coating method or the like can be given. When silver paste or the
like is used, it is possible to use a coating method, an inkjet
method or the like.
[0363] The hole-injecting layer formed in contact with the anode is
formed by using a material that allows easy hole injection
regardless of the work function of the anode. For this reason, in
the anode, it is possible to use a common electrode material, e.g.
a metal, an alloy, a conductive compound and a mixture thereof.
Specifically, a material having a small work function such as
alkaline metals such as lithium and cesium; alkaline earth metals
such as calcium and strontium; alloys containing these metals (for
example, magnesium-silver and aluminum-lithium); rare earth metals
such as europium and ytterbium; and an alloy containing rare earth
metals.
(Hole-Injecting Layer)
[0364] A hole-injecting layer is a layer that contains a substance
having high hole-injection property and has a function of injecting
holes from the anode to the organic layer. As the substance having
high hole-injection property, molybdenum oxide, titanium oxide,
vanadium oxide, rhenium oxide, ruthenium oxide, chromium oxide,
zirconium oxide, hafnium oxide, tantalum oxide, silver oxide,
tungsten oxide, manganese oxide, an aromatic amine compound, an
electron-attracting (acceptor) compound or a polymeric compound
(oligomer, dendrimer, polymer, etc.) or the like can be used. Among
these, a compound such as an aromatic amine compound and an
acceptor compound are preferable, with an acceptor compound being
more preferable.
[0365] As specific examples of an aromatic amine compound,
4,4',4''-tris(N,N-diphenylamino)triphenylamine (abbreviation:
TDATA),
4,4',4''-tris[N-(3-methylphenyl)-N-phenylamino]triphenylamine
(abbreviation: MTDATA),
4,4'-bis[N-(4-diphenylaminophenyl)-N-phenylamino]biphenyl
(abbreviation: DPAB),
4,4'-bis(N-{4-[N'-(3-methylphenyl)-N'-phenylamino]phenyl}-N-phenyl-
amino)biphenyl (abbreviation: DNTPD),
1,3,5-tris[N-(4-diphenylaminophenyl)-N-phenylamino]benzene
(abbreviation: DPA3B),
3-[N-(9-phenylcarbazol-3-yl)-N-phenylamino]-9-phenylcarbazole
(abbreviation: PCzPCA1),
3,6-bis[N-(9-phenylcarbazol-3-yl)-N-phenylamino]-9-phenylcarbazole
(abbreviation: PCzPCA2),
3-[N-(1-naphthyl)-N-(9-phenylcarbazol-3-yl)amino]-9-phenylcarbazole
(abbreviation: PCzPCN1) or the like can be given.
[0366] As the acceptor compound, for example, a heterocyclic
derivative having an electron attracting group, a quinone
derivative having an electron attracting group, an aryl borane
derivative, a heteroaryl borane derivative and the like are
preferable. As specific examples, hexacyanohexaazatriphenylene,
2,3,5,6-tetrafluoro-7,7,8,8-tetracyanoquinodimethane (abbreviation:
F4TCNQ),
1,2,3-tris[(cyano)(4-cyano-2,3,5,6-tetrafluorophenyl)methylene]c-
yclopropane or the like can be given.
[0367] When the acceptor compound is used, it is preferred that the
hole-injecting layer further comprise a matrix material. As the
matrix material, a material known as the material for an organic EL
device can be used. For example, an electron-donating (donor)
compound can be used. More preferably, the above-mentioned aromatic
amine compound can be used.
(Hole-Transporting Layer)
[0368] The hole-transporting layer is a layer that comprises a high
hole-transporting property, and has a function of transporting
holes from the anode to the organic layer.
[0369] As the substance having a high hole-transporting property, a
material having a hole mobility of 10.sup.-6cm.sup.2/(Vs) or more
is preferable. For example, aromatic amine compounds, carbazole
derivatives, anthracene derivatives, polymeric compounds, and the
like can be given, for example.
[0370] Specific examples of the aromatic amine compound include
4,4'-bis[N-(1-naphthyl)-N-phenylamino]biphenyl (abbreviation: NPB),
N,N'-bis(3-methylphenyl)-N,N'-diphenyl-[1,1'-biphenyl]-4,4'-diamine
(abbreviation: TPD),
4-phenyl-4'-(9-phenylfluorene-9-yl)triphenylamine (abbreviation:
BAFLP),
4,4'-bis[N-(9,9-dimethylfluorene-2-yl)-N-phenylamino]biphenyl
(abbreviation: DFLDPBi),
4,4',4''-tris(N,N-diphenylamino)triphenylamine (abbreviation:
TDATA),
4,4',4''-tris[N-(3-methylphenyl)-N-phenylamino]triphenylamine
(abbreviation: MTDATA),
4,4'-bis[N-(spiro-9,9'-bifluorene-2-yl)-N-phenylamino]biphenyl
(abbreviation: BSPB) or the like.
[0371] Specific examples of the carbazole derivatives include
4,4'-di(9-carbazolyl)biphenyl (abbreviation: CBP),
9-[4-(9-carbazolyl)phenyl]-10-phenylanthracene (abbreviation:
CzPA), 9-phenyl-3-[4-(10-phenyl-9-anthryl)phenyl]-9H-carbazole
(abbreviation: PCzPA) or the like.
[0372] Specific examples of the anthracene derivative include
2-t-butyl-9,10-di(2-naphthyl) anthracene (abbreviation: t-BuDNA),
9,10-di(2-naphthyl)anthracene (abbreviation: DNA)
9,10-diphenylanthracene (abbreviation: DPAnth) or the like.
[0373] Specific examples of the polymeric compound include
poly(N-vinylcarbazole) (abbreviation: PVK) and
poly(4-vinyltriphenylamine) (abbreviation: PVTPA).
[0374] As long as it is a compound having a higher
hole-transporting property as compared with electron-transporting
property, other substances than those mentioned above can be
used.
[0375] The hole-transporting layer may be a single layer or may be
a stacked layer of two or more layers. In this case, it is
preferred that a layer that contains a substance having a larger
energy gap among substances having higher hole-transporting
property be arranged on a side nearer to the emitting layer.
(Emitting Layer)
[0376] The emitting layer is a layer containing a substance having
a high emitting property (dopant material). As the dopant material,
various materials can be used. For example, a fluorescent emitting
compound (fluorescent dopant), a phosphorescent emitting compound
(phosphorescent dopant) or the like can be used. A fluorescent
emitting compound is a compound capable of emitting light from the
singlet excited state, and an emitting layer containing a
fluorescent emitting compound is called a fluorescent emitting
layer. Further, a phosphorescent emitting compound is a compound
capable of emitting light from the triplet excited state, and an
emitting layer containing a phosphorescent emitting compound is
called a phosphorescent emitting layer.
[0377] The emitting layer normally comprises a dopant material and
a host material that allows it to emit light efficiently. In some
literatures, a dopant material is called a guest material, an
emitter or an emitting material. In some literatures, a host
material is called a matrix material.
[0378] A single emitting layer may comprise plural dopant materials
and plural host materials. Further, plural emitting layers may be
present.
[0379] In the present specification, a host material combined with
the fluorescent dopant is referred to as a "fluorescent host" and a
host material combined with the phosphorescent dopant is referred
to as the "phosphorescent host". Note that the fluorescent host and
the phosphorescent host are not classified only by the molecular
structure. The phosphorescent host is a material for forming a
phosphorescent emitting layer containing a phosphorescent dopant,
but does not mean that it cannot be used as a material for forming
a fluorescent emitting layer. The same can be applied to the
fluorescent host.
[0380] In one embodiment, it is preferred that the emitting layer
comprise the compound represented by the formulas (1-1) and (1-3)
or the compound represented by the formulas (1-2) and (1-3)
(hereinafter, these compounds may be referred to as the "compound
(1)"). More preferably, it is contained as a dopant material.
Further, it is preferred that the compound (1) be contained in the
emitting layer as the fluorescent dopant.
[0381] In one embodiment, no specific restrictions are imposed on
the content of the compound (1) as the dopant material in the
emitting layer. In respect of sufficient emission and concentration
quenching, the content is preferably 0.1 to 70 mass %, more
preferably 0.1 to 30 mass %, further preferably 1 to 30 mass %,
still further preferably 1 to 20 mass %, and particularly
preferably 1 to 10 mass %.
[0382] In one embodiment, it is preferred that the emitting layer
comprise the compound represented by the formula (3-I)
(hereinafter, this compound may be referred to as the "compound
(3-I)"). More preferably, it is contained as a dopant material.
Further, it is preferred that the compound (3-I) be contained in
the emitting layer as the fluorescent dopant.
[0383] In one embodiment, no specific restrictions are imposed on
the content of the compound (3-I) as the dopant material in the
emitting layer. In respect of sufficient emission and concentration
quenching, the content is preferably 0.1 to 70 mass %, more
preferably 0.1 to 30 mass %, further preferably 1 to 30 mass %,
still further preferably 1 to 20 mass %, and particularly
preferably 1 to 10 mass %.
[0384] In one embodiment, it is preferred that the emitting layer
comprise the compound represented by the formula (I) (hereinafter,
this compound may be referred to as the "compound (I)"). More
preferably, it is contained as a dopant material. Further, it is
preferred that the compound (I) be contained in the emitting layer
as the fluorescent dopant.
[0385] In one embodiment, no specific restrictions are imposed on
the content of the compound (I) as the dopant material in the
emitting layer. In respect of sufficient emission and concentration
quenching, the content is preferably 0.1 to 70 mass %, more
preferably 0.1 to 30 mass %, further preferably 1 to 30 mass %,
still further preferably 1 to 20 mass %, and particularly
preferably 1 to 10 mass %.
[0386] In one embodiment, it is preferred that the emitting layer
comprise the compound represented by the formula (1) or (2). More
preferably, it is contained as a dopant material. Further, it is
preferred that the compound (1) or (2) be contained in the emitting
layer as the fluorescent dopant.
[0387] In one embodiment, no specific restrictions are imposed on
the content of the compound (1) or (2) as the dopant material in
the emitting layer. In respect of sufficient emission and
concentration quenching, the content is preferably 0.1 to 70 mass
%, more preferably 0.1 to 30 mass %, further preferably 1 to 30
mass %, still further preferably 1 to 20 mass %, and particularly
preferably 1 to 10 mass %.
(Fluorescent Dopant)
[0388] As the fluorescent dopant other than the compound (1), the
compound (3-I) and the compound (I), a fused polycyclic aromatic
derivative, a styrylamine derivative, a fused ring amine
derivative, a boron-containing compound, a pyrrole derivative, an
indole derivative, a carbazole derivative can be given, for
example. Among these, a fused ring amine derivative, a
boron-containing compound, carbazole derivative is preferable.
[0389] As the fused ring amine derivative, a diaminopyrene
derivative, a diaminochrysene derivative, a diaminoanthracene
derivative, a diaminofluorene derivative, a diaminofluorene
derivative with which one or more benzofuro skeletons are fused, or
the like can be given.
[0390] As the boron-containing compound, a pyrromethene derivative,
a triphenylborane derivative or the like can be given.
[0391] As the blue fluorescent dopant, pyrene derivatives,
styrylamine derivatives, chrysene derivatives, fluoranthene
derivatives, fluorene derivatives, diamine derivatives,
triarylamine derivatives and the like can be given, for example.
Specifically,
N,N'-bis[4-(9H-carbazol-9-yl)phenyl]-N,N'-diphenylstilbene-4,4'-diamine
(abbreviation: YGA2S),
4-(9H-carbazol-9-yl)-4'-(10-phenyl-9-anthryl)triphenyamine
(abbreviation: YGAPA),
4-(10-phenyl-9-anthryl)-4'-(9-phenyl-9H-carbazole-3-yl)triphenyla-
mine (abbreviation: PCBAPA) or the like can be given.
[0392] As the green fluorescent dopant, an aromatic amine
derivative or the like can be given, for example. Specifically,
N-(9,10-diphenyl-2-anthryl)-N,9-diphenyl-9H-carbazole-3-amine
(abbreviation: 2PCAPA),
N-[9,10-bis(1,1'-biphenyl-2-yl)-2-anthryl]-N,9-diphenyl-9H-carbazole-3-am-
ine (abbreviation: 2PCABPhA),
N-(9,10-diphenyl-2-anthryl)-N,N',N'-triphenyl-1,4-phenylenediamine
(abbreviation: 2DPAPA),
N-[9,10-bis(1,1'-biphenyl-2-yl)-2-anthryl]-N,N',N'-triphenyl-1,4-phenylen-
ediamine (abbreviation: 2DPABPhA),
N-[9,10-bis(1,1'-biphenyl-2-yl)]-N-[4-(9H-carbazole-9-yl)phenyl]-N-phenyl-
anthracene-2-amine (abbreviation: 2YGABPhA),
N,N,9-triphenylanthracene-9-amine (abbreviation: DPhAPhA) or the
like can be given, for example.
[0393] As the red fluorescent dopant, a tetracene derivative, a
diamine derivative or the like can be given. Specifically,
N,N,N',N'-tetrakis(4-methylphenyl)tetracene-5,11-diamine
(abbreviation: p-mPhTD),
7,14-diphenyl-N,N,N',N'-tetrakis(4-methylphenyl)acenaphtho[1,2--
a]fluoranthene-3,10-diamine (abbreviation: p-mPhAFD) or the like
can be given.
(Phosphorescent Dopant)
[0394] As the phosphorescent dopant, a phosphorescent emitting
heavy metal complex and a phosphorescent emitting rare earth metal
complex can be given.
[0395] As the heavy metal complex, an iridium complex, an osmium
complex, a platinum complex or the like can be given. As the heavy
metal complex, an ortho-metalated complex of a metal selected from
iridium, osmium and platinum.
[0396] Examples of rare earth metal complexes include terbium
complexes, europium complexes and the like. Specifically,
tris(acetylacetonate)(monophenanthroline)terbium(III)
(abbreviation: Tb(acac).sub.3(Phen)),
tris(1,3-diphenyl-1,3-propandionate)(monophenanthroline)europium(III)
(abbreviation: Eu(DBM).sub.3(Phen)),
tris[1-(2-thenoyl)-3,3,3-trifluoroacetonate](monophenanthroline)europium(-
III) (abbreviation: Eu(TTA).sub.3(Phen)) or the like can be given.
These rare earth metal complexes are preferable as phosphorescent
dopants since rare earth metal ions emit light due to electronic
transition between different multiplicity.
[0397] As the blue phosphorescent dopant, an iridium complex, an
osmium complex, a platinum complex, or the like can be given, for
example. Specifically,
bis[2-(4',6'-difluorophenyl)pyridinate-N,C2']iridium(III)
tetrakis(1-pyrazolyl)borate (abbreviation: Fir6),
bis[2-(4',6'-difluorophenyl) pyridinato-N,C2']iridium(III)
picolinate (abbreviation: Ir(CF.sub.3ppy).sub.2(pic)),
bis[2-(4',6'-difluorophenyl)pyridinato-N,C2']iridium(III)
acetylacetonate (abbreviation: Flracac) or the like can be
given.
[0398] As the green phosphorescent dopant, an iridium complex or
the like can be given, for example. Specifically,
tris(2-phenylpyridinato-N,C2') iridium(III) (abbreviation:
Ir(ppy).sub.3), bis(1,2-diphenyl-1H-benzimidazolato)iridium(III)
acetylacetonate (abbreviation: Ir(pbi).sub.2(acac)),
bis(benzo[h]quinolinato)iridium(III) acetylacetonate (abbreviation:
Ir(bzq).sub.2(acac)) or the like can be given.
[0399] As the red phosphorescent dopant, an iridium complex, a
platinum complex, a terbium complex, an europium complex or the
like can be given. Specifically,
bis[2-(2'-benzo[4,5-.alpha.]thienyl)pyridinato-N,C3']iridium(III)
acetylacetonate (abbreviation: Ir(btp).sub.2(acac)),
bis(1-phenylisoquinolinato-N,C2')iridium(III) acetylacetonate
(abbreviation: Ir(piq).sub.2(acac)),
(acetylacetonato)bis[2,3-bis(4-fluorophenyl)quinoxalinato]iridium(III)
(abbreviation: Ir(Fdpq).sub.2(acac)),
2,3,7,8,12,13,17,18-octaethyl-21H,23H-porphyrin platinum(II)
(abbreviation PtOEP) or the like can be given.
(Host Material)
[0400] As the host material, metal complexes such as aluminum
complexes, beryllium complexes and zinc complexes; heterocyclic
compounds such as indole derivatives, pyridine derivatives,
pyrimidine derivatives, triazine derivatives, quinoline
derivatives, isoquinoline derivatives, quinazoline derivatives,
dibenzofuran derivatives, dibenzothiophene derivatives, oxadiazole
derivatives, benzimidazole derivatives, phenanthroline derivatives;
fused aromatic compounds such as a naphthalene derivative, a
triphenylene derivative, a carbazole derivative, an anthracene
derivative, a phenanthrene derivative, a pyrene derivative, a
chrysene derivative, a naphthacene derivative, a fluoranthene
derivative; and aromatic amine compound such as triarylamine
derivatives and fused polycyclic aromatic amine derivatives can be
given, for example. Plural types of host materials can be used in
combination.
[0401] As specific examples of the metal complex,
tris(8-quinolinolato)aluminum(III) (abbreviation: Alq),
tris(4-methyl-8-quinolinolato)aluminum(III) (abbreviation: Almq3),
bis(10-hydroxybenzo[h]quinolinato)beryllium(II) (abbreviation:
BeBq2),
bis(2-methyl-8-quinolinolato)(4-phenylphenolato)aluminum(III)
(abbreviation: BAlq), bis(8-quinolinolato)zinc(II) (abbreviation:
Znq), bis[2-(2-benzoxazolyl)phenolato]zinc(II) (abbreviation:
ZnPBO), bis[2-(2-benzothiazolyl)phenolate]zinc(II) (abbreviation:
ZnBTZ) or the like can be given.
[0402] As specific examples of the heterocyclic compound,
2-(4-biphenylyl)-5-(4-tert-butylphenyl)-1,3,4-oxadiazole
(abbreviation: PBD),
1,3-bis[5-(p-tert-butylphenyl)-1,3,4-oxadiazol-2-yl]benzene
(abbreviation: OXD-7),
3-(4-biphenylyl)-4-phenyl-5-(4-tert-butylphenyl)-1,2,4-triazole
(abbreviation: TAZ),
2,2',2''-(1,3,5-benzenetriyl)tris(1-phenyl-1H-benzoimidazole)(abbreviatio-
n: TPBI), bathophenanthroline (abbreviation: BPhen), bathocuproin
(abbreviation: BCP) or the like can be given.
[0403] As specific examples of the fused aromatic compound,
9-[4-(10-phenyl-9-anthryl)phenyl]-9H-carbazole (abbreviation:
CzPA), 3,6-diphenyl-9-[4-(10-phenyl-9-anthryl)phenyl]-9H-carbazole
(abbreviation: DPCzPA), 9,10-bis(3,5-diphenylphenyl)anthracene
(abbreviation: DPPA), 9,10-di(2-naphthyl)anthracene (abbreviation:
DNA), 2-tert-butyl-9,10-di(2-naphthyl)anthracene (abbreviation:
t-BuDNA), 9,9'-bianthryl (abbreviation: BANT),
9,9'-(stilbene-3,3'-diyl)diphenanthrene (abbreviation: DPNS),
9,9'-(stilbene-4,4'-diyl)diphenanthrene (abbreviation: DPNS2),
3,3',3''-(benzene-1,3,5-triyl)tripyene (abbreviation: TPB3),
9,10-diphenylanthracene (abbreviation: DPAnth),
6,12-dimethoxy-5,11-diphenylcrysene or the like can be given.
[0404] As specific examples of the aromatic amine compound,
N,N-diphenyl-9-[4-(10-phenyl-9-anthryl)phenyl]-9H-carbazole-3-amine
(abbreviation: CzA1PA), 4-(10-phenyl-9-anthryl)triphenylamine
(abbreviation: DPhPA),
N,9-diphenyl-N-[4-(10-phenyl-9-anthryl)phenyl]-9H-carbazole-3-amine
(abbreviation: PCAPA),
N,9-diphenyl-N-{4-[4-(10-phenyl-9-anthryl)phenyl]phenyl}-9H-carbazole-3-a-
mine (abbreviation: PCAPBA),
N-(9,10-diphenyl-2-anthryl)-N,9-diphenyl-9H-carbazole-3-amine
(abbreviation: 2PCAPA),
4,4'-bis[N-(1-naphthyl)-N-phenylamino]biphenyl (abbreviation: NPB
or .alpha.-NPD),
N,N'-bis(3-methylphenyl)-N,N'-diphenyl-[1,1'-biphenyl]-4,4'-diamine
(abbreviation: TPD),
4,4'-bis[N-(9,9-dimethylfluorene-2-yl)-N-phenylamino]biphenyl
(abbreviation: DFLDPBi),
4,4'-bis[N-(spiro-9,9'-bifluorene-2-yl)-N-phenylamino]biphenyl
(abbreviation: BSPB) or the like can be given.
[0405] As the fluorescent host, a compound having a higher singlet
energy level than a fluorescent dopant is preferable. For example,
a heterocyclic compound, a fused aromatic compound or the like can
be given. As the fused aromatic compound, an anthracene derivative,
a pyrene derivative, a chrysene derivative, a naphthacene
derivative or the like are preferable.
[0406] As the phosphorescent host, a compound having a higher
triplet energy level as compared with a phosphorescent dopant is
preferable. For example, a metal complex, a heterocyclic compound,
a fused aromatic compound or the like can be given. Among these, an
indole derivative, a carbazole derivative, a pyridine derivative, a
pyrimidine derivative, a triazine derivative, a quinolone
derivative, an isoquinoline derivative, a quinazoline derivative, a
dibenzofuran derivative, a dibenzothiophene derivative, a
naphthalene derivative, a triphenylene derivative, a phenanthrene
derivative, a fluoranthene derivative or the like can be given.
(Electron-Transporting Layer)
[0407] An electron-transporting layer is a layer that comprises a
substance having high electron-transporting property. As the
substance having high electron-transporting property, a substance
having an electron mobility of 10.sup.-6cm.sup.2/Vs or more is
preferable. For example, a metal complex, an aromatic heterocyclic
compound, an aromatic hydrocarbon compound, a polymeric compound or
the like can be given.
[0408] As the metal complex, an aluminum complex, a beryllium
complex, a zinc complex or the like can be given. Specifically,
tris(8-quinolinolate)aluminum(III) (abbreviation: Alq),
tris(4-methyl-8-quinolinolate)aluminum (abbreviation: Almq3),
bis(10-hydroxybenzo[h]quinolinolate)beryllium (abbreviation:
BeBq2),
bis(2-methyl-8-quinollinolate)(4-phenylphenolate)aluminum(III)
(abbreviation: BAlq), bis(8-quinolinolate)zinc(II) (abbreviation:
Znq), bis[2-(2-benzoxazolyl)phenolato]zinc(II) (abbreviation:
ZnPBO), bis[2-(2-benzothiazolylphenolato]zinc(II) (abbreviation:
ZnBTZ) or the like can be given, for example.
[0409] As the aromatic heterocyclic compound, imidazole derivatives
such as benzimidazole derivatives, imidazopyridine derivatives and
benzimidazophenanthridine derivatives; azine derivatives such as
pyrimidine derivatives and triazine derivatives; a compound
containing a nirogen-containing six-membered ring structure such as
quinoline derivatives, isoquinoline derivatives, and phenanthroline
derivatives (including one having a phosphine oxide-based
substituent on the heterocyclic ring) or the like can be given.
Specifically,
2-(4-biphenylyl)-5-(4-tert-butylphenyl)-1,3,4-oxadiazole
(abbreviation: PBD),
1,3-bis[5-(p-tert-butylphenyl)-1,3,4-oxadiazole-2-yl]benzene
(abbreviation: OXD-7),
3-(4-tert-butylphenyl)-4-phenyl-5-(4-biphenylyl)-1,2,4-triazole
(abbreviation: TAZ),
3-(4-tert-butylphenyl)-4-(4-ethylphenyl)-5-(4-biphenylyl)-1,2,4-triazole
(abbreviation: p-EtTAZ), bathophenanthroline (abbreviation: BPhen),
bathocuproin (abbreviation: BCP),
4,4'-bis(5-methylbenzoxazol-2-yl)stilbene (abbreviation: BzOs) or
the like can be given.
[0410] As the aromatic hydrocarbon compound, an anthracene
derivative, a fluoranthene derivative or the like can be given, for
example.
[0411] As specific examples of the polymeric compound,
poly[(9,9-dihexylfluorene-2,7-diyl)-co-(pyridine-3,5-diyl)](abbreviation:
PF-Py),
poly[(9,9-dioctylfluorene-2,7-diyl)-co-(2,2'-bipyridine-6,6'-diyl-
)] (abbreviation: PF-BPy) or the like can be given.
[0412] As long as it is a compound having a higher
electron-transporting property as compared with hole-transporting
property, such a compound may be used in the electron-transporting
layer in addition to the substances mentioned above.
[0413] The electron-transporting layer may be a single layer, or a
stacked layer of two or more layers. In this case, it is preferable
to arrange a layer that includes a substance having a larger energy
gap, among substances having a high electron-transporting
capability, on the side nearer to the emitting layer.
[0414] For example, as shown in FIG. 2, a configuration including
the first electron-transporting layer 7a on the anode side and the
second electron-transporting layer 7b on the cathode side may be
employed.
[0415] The electron-transporting layer may contain a metal such as
an alkali metal, magnesium, an alkaline earth metal, or an alloy
containing two or more of these metals; a metal compound such as an
alkali metal compound such as 8-quinolinolato lithium (Liq), or an
alkaline earth metal compound.
[0416] When a metal such as an alkali metal, magnesium, an alkaline
earth metal, or an alloy containing two or more of these metals is
contained in the electron-transporting layer, the content of the
metal is not particularly limited, but is preferably from 0.1 to 50
mass %, more preferably from 0.1 to 20 mass %, further preferably
from 1 to 10 mass %.
[0417] When a metal compound such as an alkali metal compound or an
alkaline earth metal compound is contained in the
electron-transporting layer, the content of the metal compound is
preferably 1 to 99 mass %, more preferably from 10 to 90 mass %.
When the electron-transporting layer is formed of plural layers, a
layer on the emitting layer side can be formed only from these
metal compounds.
(Electron-Injecting Layer)
[0418] The electron-injecting layer is a layer that includes a
substance that has a high electron-injecting capability, and has
the function of efficiently injecting electrons from a cathode to
an emitting layer. Examples of the substance that has a high
electron-injecting capability include an alkali metal, magnesium,
an alkaline earth metal, and a compound thereof. Specific examples
thereof include lithium, cesium, calcium, lithium fluoride, cesium
fluoride, calcium fluoride, lithium oxide, and the like. In
addition, an electron-transporting substance having
electron-transporting property in which is incorporated with an
alkali metal, magnesium, an alkaline earth metal, or a compound
thereof is incorporated, for example, Alq incorporated with
magnesium, may also be used.
[0419] Alternatively, a composite material that includes an organic
compound and a donor compound may also be used in the
electron-injecting layer. Such a composite material is excellent in
the electron-injecting capability and the electron-transporting
capability since the organic compound receives electrons from the
donor compound.
[0420] The organic compound is preferably a material excellent in
transporting capability of the received electrons, and
specifically, for example, a metal complex, an aromatic
heterocyclic compound, or the like, which is a substance that has a
high electron-transporting capability mentioned above, can be
used.
[0421] Any material capable of donating its electron to the organic
compound can be used as the donor compound. Examples thereof
include an alkali metal, magnesium, an alkaline earth metal, and a
rare earth metal. Specific examples thereof include lithium,
cesium, magnesium, calcium, erbium, and ytterbium. Further, an
alkali metal oxide and an alkaline earth metal oxide are preferred,
and examples thereof include lithium oxide, calcium oxide, and
barium oxide. In addition, a Lewis base such as magnesium oxide can
be used. Moreover, an organic compound such as tetrathiafulvalene
(abbreviation: TTF) can also be used.
(Cathode)
[0422] For the cathode, a metal, an alloy, an electrically
conductive compound, and a mixture thereof, each having a small
work function (specifically, a work function of 3.8 eV or less) are
preferably used. Specific examples of the material for such a
cathode include an alkali metal such as lithium and cesium;
magnesium; an alkaline earth metal such as calcium, and strontium;
an alloy containing these metals (for example, magnesium-silver,
aluminum-lithium); a rare earth metal such as europium and
ytterbium; and an alloy containing a rare earth metal.
[0423] The cathode is usually formed by a vacuum vapor deposition
or a sputtering method. Further, in the case of using a silver
paste or the like, a coating method, an inkjet method, or the like
can be employed.
[0424] Moreover, when the electron-injecting layer is provided,
various electrically conductive materials such as aluminum, silver,
ITO, graphene, indium oxide-tin oxide containing silicon or silicon
oxide, selected independently from the work function, can be used
to form a cathode. These electrically conductive materials are made
into films using a sputtering method, an inkjet method, a spin
coating method, or the like.
(Insulating Layer)
[0425] In the organic EL device, pixel defects based on leakage or
a short circuit are easily generated since an electric field is
applied to a thin film. In order to prevent this, it is preferred
to insert an insulating thin layer between a pair of
electrodes.
[0426] Examples of materials used in the insulating layer include
aluminum oxide, lithium fluoride, lithium oxide, cesium fluoride,
cesium oxide, magnesium oxide, magnesium fluoride, calcium oxide,
calcium fluoride, aluminum nitride, titanium oxide, silicon oxide,
germanium oxide, silicon nitride, boron nitride, molybdenum oxide,
ruthenium oxide, and vanadium oxide. A mixture thereof may be used
in the insulating layer, and a laminate of a plurality of layers
that include these materials can be also used for the insulating
layer.
(Spacing Layer)
[0427] The spacing layer is a layer provided between the
fluorescent emitting layer and the phosphorescent emitting layer
when the fluorescent emitting layer and the phosphorescent emitting
layer are stacked in order to prevent diffusion of excitons
generated in the phosphorescent emitting layer to the fluorescent
emitting layer or in order to adjust the carrier balance. Further,
the spacing layer can be provided between the plural phosphorescent
emitting layers.
[0428] Since the spacing layer is provided between the emitting
layers, the material used for the spacing layer is preferably a
material having both electron-transporting capability and
hole-transporting capability. In order to prevent diffusion of the
triplet energy in adjacent phosphorescent emitting layers, it is
preferred that the spacing layer have a triplet energy of 2.6 eV or
more.
[0429] As the material used for the spacing layer, the same
materials as those used in the above-mentioned hole-transporting
layer can be given.
(Electron-Blocking Layer, Hole-Blocking Layer, Exciton-Blocking
Layer)
[0430] An electron-blocking layer, a hole-blocking layer, an
exciton (triplet)-blocking layer, and the like may be provided in
adjacent to the emitting layer.
[0431] The electron-blocking layer has a function of preventing
leakage of electrons from the emitting layer to the
hole-transporting layer. The hole-blocking layer has a function of
preventing leakage of holes from the emitting layer to the
electron-transporting layer. The exciton-blocking layer has a
function of preventing diffusion of excitons generated in the
emitting layer to the adjacent layers and confining the excitons
within the emitting layer.
(Method for Forming a Layer)
[0432] The method for forming each layer of the organic EL device
of the invention is not particularly limited unless otherwise
specified. A known film-forming method such as a dry film-forming
method, a wet film-forming method or the like can be used. Specific
examples of the dry film-forming method include a vacuum deposition
method, a sputtering method, a plasma method, an ion plating
method, and the like. Specific examples of the wet film-forming
method include various coating methods such as a spin coating
method, a dipping method, a flow coating method, an inkjet method,
and the like.
(Film Thickness)
[0433] The film thickness of each layer of the organic EL device of
the invention is not particularly limited unless otherwise
specified. If the film thickness is too small, defects such as
pinholes are likely to occur to make it difficult to obtain a
sufficient luminance. If the film thickness is too large, a high
driving voltage is required to be applied, leading to a lowering in
efficiency. In this respect, the film thickness is preferably 5 nm
to 10 .mu.m, and more preferably 10 nm to 0.2 .mu.m.
[Electronic Apparatus]
[0434] The electronic apparatus according to one aspect of the
invention includes the above-described organic EL device according
to one aspect of the invention. Examples of the electronic
apparatus include display parts such as an organic EL panel module;
display devices of television sets, mobile phones, smart phones,
and personal computer, and the like; and emitting devices of a
lighting device and a vehicle lighting device.
[Novel Compound]
[0435] The novel compound according to one aspect of the invention
is a compound represented by the following formulas (1-1) and (1-3)
or the compound represented by the following formulas (1-2) and
(1-3):
##STR00400##
wherein in the formulas (1-1), (1-2) and (1-3),
[0436] a ring A is a substituted or unsubstituted fused aryl ring
including 10 to 50 ring carbon atoms, a substituted or
unsubstituted fused heterocyclic ring including 8 to 50 ring atoms
or a benzene ring represented by the following formula (2);
[0437] two atomic bondings * in the formula (1-1) are respectively
bonded with a ring carbon atom of the fused aryl ring of the ring
A, a ring atom of the fused heterocyclic ring of the ring A, or a
ring carbon atom of the benzene ring represented by the formula (2)
of the ring A;
[0438] three atomic bondings * in the formula (1-2) are
respectively bonded with a ring carbon atom of the fused aryl ring
of the ring A, a ring atom of the fused heterocyclic ring of the
ring A, or a ring carbon atom of the benzene ring represented by
the formula (2) of the ring A;
[0439] one or more pairs of adjacent two or more of R.sub.1 to
R.sub.16 may form a substituted or unsubstituted, saturated or
unsaturated ring;
[0440] R.sub.1 to R.sub.16 that do not form the substituted or
unsubstituted, saturated or unsaturated ring are independently a
hydrogen atom, a substituted or unsubstituted alkyl group including
1 to 50 carbon atoms, a substituted or unsubstituted haloalkyl
group including 1 to 50 carbon atoms, a substituted or
unsubstituted alkenyl group including 2 to 50 carbon atoms, a
substituted or unsubstituted alkynyl group including 2 to 50 carbon
atoms, a substituted or unsubstituted cycloalkyl group including 3
to 50 ring carbon atoms, a substituted or unsubstituted alkoxy
group including 1 to 50 carbon atoms, a substituted or
unsubstituted alkylthio group including 1 to 50 carbon atoms, a
substituted or unsubstituted aryloxy group including 6 to 50 ring
carbon atoms, a substituted or unsubstituted arylthio group
including 6 to 50 ring carbon atoms, a substituted or unsubstituted
aralkyl group including 7 to 50 carbon atoms,
--Si(R.sub.31)(R.sub.32)(R.sub.33), --C(.dbd.O)R.sub.34,
--COOR.sub.35, --N(R.sub.36)(R.sub.37), a halogen atom, a cyano
group, a nitro group, a substituted or unsubstituted aryl group
including 6 to 50 ring carbon atoms or a substituted or
unsubstituted monovalent heterocyclic group including 5 to 50 ring
atoms;
[0441] R.sub.31 to R.sub.37 are independently a hydrogen atom, a
substituted or unsubstituted alkyl group including 1 to 50 carbon
atoms, a substituted or unsubstituted cycloalkyl group including 3
to 50 ring carbon atoms, a substituted or unsubstituted aryl group
including 6 to 50 ring carbon atoms or a substituted or
unsubstituted monovalent heterocyclic group including 5 to 50 ring
atoms; and
[0442] when each of R.sub.31 to R.sub.37 is present in plural, each
of the plural R.sub.31s to R.sub.37s may be the same or
different;
##STR00401##
[0443] wherein in the formula (2), at one of the two ring carbon
atoms indicated by *, the atomic bonding extending from the benzene
ring B in the formula (1-1) or the formula (1-2) is bonded, and at
the other of the two ring carbon atoms indicated by *, the atomic
bonding extending from the benzene ring C in the formula (1-3) is
bonded;
[0444] R.sub.17 is a hydrogen atom, a substituted or unsubstituted
alkyl group including 1 to 50 carbon atoms, a substituted or
unsubstituted haloalkyl group including 1 to 50 carbon atoms, a
substituted or unsubstituted alkenyl group including 2 to 50 carbon
atoms, a substituted or unsubstituted alkynyl group including 2 to
50 carbon atoms, a substituted or unsubstituted cycloalkyl group
including 3 to 50 ring carbon atoms, a substituted or unsubstituted
alkoxy group including 1 to 50 carbon atoms, a substituted or
unsubstituted alkylthio group including 1 to 50 carbon atoms, a
substituted or unsubstituted aryloxy group including 6 to 50 ring
carbon atoms, a substituted or unsubstituted arylthio group
including 6 to 50 ring carbon atoms, a substituted or unsubstituted
aralkyl group including 7 to 50 carbon atoms,
--Si(R.sub.31)(R.sub.32)(R.sub.33), --C(.dbd.O)R.sub.34,
--COOR.sub.35, --N(R.sub.36)(R.sub.37), a halogen atom, a cyano
group, a nitro group, a substituted or unsubstituted aryl group
including 6 to 50 ring carbon atoms or a substituted or
unsubstituted monovalent heterocyclic group including 5 to 50 ring
atoms;
[0445] R.sub.31 to R.sub.37 are independently a hydrogen atom, a
substituted or unsubstituted alkyl group including 1 to 50 carbon
atoms, a substituted or unsubstituted cycloalkyl group including 3
to 50 ring carbon atoms, a substituted or unsubstituted aryl group
including 6 to 50 ring carbon atoms or a substituted or
unsubstituted monovalent heterocyclic group including 5 to 50 ring
atoms;
[0446] when each of R.sub.31 to R.sub.37 is present in plural, each
of the plural R.sub.31s to R.sub.37s may be the same or different;
and
[0447] n is an integer of 1 or 2, and when n is 2, two R.sub.17s
may be the same or different.
[0448] In the above-mentioned novel compound, if the ring A is a
benzene ring represented by the formula (2), at least one of
R.sub.1 to R.sub.17 is a substituted or unsubstituted alkyl group
including 1 to 50 carbon atoms, a substituted or unsubstituted
cycloalkyl group including 3 to 50 ring carbon atoms, a substituted
or unsubstituted aryl group including 6 to 50 ring carbon atoms, or
a substituted or unsubstituted monovalent heterocyclic group
including 5 to 50 ring atoms; or at least one pair of adjacent two
or more of R.sub.1 to R.sub.16 forms a substituted or
unsubstituted, saturated or unsaturated ring.
[0449] In this respect, the novel compound according to this aspect
is different from the compound represented by the formulas (1-1)
and (1-3) and the compound represented by the formula (1-2) and
(1-3) contained in the organic layer of the organic
electroluminescence device according to one aspect of the invention
described above. On the other hand, the novel compound according to
this aspect is the same except for this respect.
[0450] Therefore, structures, each substituent, preparation methods
in other embodiments of the novel compound according to this aspect
are the same as those of the compound represented by the formulas
(1-1) and (1-3) and the compound represented by the formula (1-2)
and (1-3) contained in the organic layer of the organic
electroluminescence device according to one aspect of the
invention. Furthermore, specific examples thereof include the same
compounds except for the following compounds.
##STR00402##
[0451] The novel compound according to another aspect of the
invention is a compound represented by the following formula
(3-I):
##STR00403##
[0452] wherein in the formula (3-I),
[0453] one or more pairs of adjacent two or more of R.sub.1 to
R.sub.7 and R.sub.10 to R.sub.16 may form a substituted or
unsubstituted, saturated or unsaturated ring;
[0454] R.sub.1 to R.sub.7 and R.sub.10 to R.sub.16 that do not form
the substituted or unsubstituted, saturated or unsaturated ring are
independently a hydrogen atom, a substituted or unsubstituted alkyl
group including 1 to 50 carbon atoms, a substituted or
unsubstituted haloalkyl group including 1 to 50 carbon atoms, a
substituted or unsubstituted alkenyl group including 2 to 50 carbon
atoms, a substituted or unsubstituted alkynyl group including 2 to
50 carbon atoms, a substituted or unsubstituted cycloalkyl group
including 3 to 50 ring carbon atoms, a substituted or unsubstituted
alkoxy group including 1 to 50 carbon atoms, a substituted or
unsubstituted alkylthio group including 1 to 50 carbon atoms, a
substituted or unsubstituted aryloxy group including 6 to 50 ring
carbon atoms, a substituted or unsubstituted arylthio group
including 6 to 50 ring carbon atoms, a substituted or unsubstituted
aralkyl group including 7 to 50 carbon atoms,
--Si(R.sub.31)(R.sub.32)(R.sub.33), --C(.dbd.O)R.sub.34,
--COOR.sub.35, --N(R.sub.36)(R.sub.37), a halogen atom, a cyano
group, a nitro group, a substituted or unsubstituted aryl group
including 6 to 50 ring carbon atoms or a substituted or
unsubstituted monovalent heterocyclic group including 5 to 50 ring
atoms, provided that at least one of R.sub.1 to R.sub.7 and
R.sub.10 to R.sub.16 is --N(R.sub.36)(R.sub.37);
[0455] R.sub.17 is a hydrogen atom, a substituted or unsubstituted
alkyl group including 1 to 50 carbon atoms, a substituted or
unsubstituted haloalkyl group including 1 to 50 carbon atoms, a
substituted or unsubstituted alkenyl group including 2 to 50 carbon
atoms, a substituted or unsubstituted alkynyl group including 2 to
50 carbon atoms, a substituted or unsubstituted cycloalkyl group
including 3 to 50 ring carbon atoms, a substituted or unsubstituted
alkoxy group including 1 to 50 carbon atoms, a substituted or
unsubstituted alkylthio group including 1 to 50 carbon atoms, a
substituted or unsubstituted aryloxy group including 6 to 50 ring
carbon atoms, a substituted or unsubstituted arylthio group
including 6 to 50 ring carbon atoms, a substituted or unsubstituted
aralkyl group including 7 to 50 carbon atoms,
--Si(R.sub.31)(R.sub.32)(R.sub.33), --C(.dbd.O)R.sub.34,
--COOR.sub.35, --N(R.sub.36)(R.sub.37), a halogen atom, a cyano
group, a nitro group, a substituted or unsubstituted aryl group
including 6 to 50 ring carbon atoms or a substituted or
unsubstituted monovalent heterocyclic group including 5 to 50 ring
atoms;
[0456] two R.sub.17s may be the same or different;
[0457] R.sub.31 to R.sub.37 are independently a hydrogen atom, a
substituted or unsubstituted alkyl group including 1 to 50 carbon
atoms, a substituted or unsubstituted cycloalkyl group including 3
to 50 ring carbon atoms, a substituted or unsubstituted aryl group
including 6 to 50 ring carbon atoms or a substituted or
unsubstituted monovalent heterocyclic group including 5 to 50 ring
atoms; and
[0458] when each of R.sub.31 to R.sub.37 is present in plural, each
of the plural R.sub.31s to R.sub.37s may be the same or
different.
[0459] The above-mentioned novel compound is the same as the
compound represented by the formula (3-I) contained in the organic
layer of the organic electroluminescence device according to one
aspect of the invention described above.
[0460] Therefore, structures, each substituent, and preparation
methods in other embodiments of the novel compound according to
this aspect are the same as those of the compound represented by
the formula (3-I) contained in the organic layer of the organic
electroluminescence device according to one aspect of the
invention. Furthermore, the same can be applied to the specific
examples of the compound represented by the formula (3-I).
[0461] In one embodiment, the compound represented by the formula
(3-I) is compound represented by the following formula (I):
##STR00404##
[0462] wherein in the formula (I),
[0463] one or more pairs of adjacent two or more of R.sub.1 to
R.sub.4 and R.sub.10 to R.sub.13 may form a substituted or
unsubstituted, saturated or unsaturated ring;
[0464] R.sub.1 to R.sub.4, R.sub.10 to R.sub.13, and R.sub.17 that
do not form the substituted or unsubstituted, saturated or
unsaturated ring are independently a hydrogen atom, a substituted
or unsubstituted aryl group including 6 to 20 ring carbon atoms or
a substituted or unsubstituted monovalent heterocyclic group
including 5 to 20 ring atoms;
[0465] two R.sub.17s may be the same or different; and
[0466] R.sub.A, R.sub.B, R.sub.C and R.sub.D are independently a
substituted or unsubstituted aryl group including 6 to 20 ring
carbon atoms or a substituted or unsubstituted monovalent
heterocyclic group including 5 to 20 ring atoms.
[0467] The above-mentioned novel compound is the same as the
compound represented by the formula (I) contained in the organic
layer of the organic electroluminescence device according to one
aspect of the invention described above.
[0468] Therefore, structures, each substituent, and preparation
methods in other embodiments of the novel compound according to
this aspect are the same as those of the compound represented by
the formula (I) contained in the organic layer of the organic
electroluminescence device according to one aspect of the
invention. Furthermore, the same can be applied to the specific
examples of the compound represented by the formula (I).
[0469] The novel compound according to another aspect of the
invention is a compound represented by the following formula (1) or
(2):
##STR00405##
[0470] wherein in the formulas (1) and (2),
[0471] one or more pairs of adjacent two or more of R.sub.1 to
R.sub.7 and R.sub.10 to R.sub.16 may form a substituted or
unsubstituted, saturated or unsaturated ring;
[0472] R.sub.7, and R.sub.1 to R.sub.7 and R.sub.10 to R.sub.16
that do not form the substituted or unsubstituted, saturated or
unsaturated ring are independently a hydrogen atom, a substituted
or unsubstituted aryl group including 6 to 20 ring carbon atoms or
a substituted or unsubstituted monovalent heterocyclic group
including 5 to 20 ring atoms;
[0473] two R.sub.17s may be the same or different; and
[0474] Ar.sub.1 to Ar.sub.4 are independently a substituted or
unsubstituted aryl group including 6 to 20 ring carbon atoms.
[0475] The above-mentioned novel compound is the same as the
compound represented by the formula (1) or (2) contained in the
organic layer of the organic electroluminescence device according
to one aspect of the invention described above.
[0476] Therefore, structures, each substituent, and preparation
methods in other embodiments of the novel compound according to
this aspect are the same as those of the compound represented by
the formula (1) or (2) contained in the organic layer of the
organic electroluminescence device according to one aspect of the
invention. Furthermore, the same can be applied to the specific
examples of the compound represented by the formula (1) or (2).
[0477] In one embodiment, the compound represented by the formula
(1) or (2) is a compound represented by the following formula (1-1)
or (2-1):
##STR00406##
[0478] wherein in the formulas (1-1) and (2-1),
[0479] R.sub.5 to R.sub.7, R.sub.14 to R.sub.17 and Ar.sub.1 to
Ar.sub.4 are as defined in the formulas (1) and (2).
[0480] The above-mentioned novel compound is the same as the
compound represented by the formula (1-1) or (2-1) contained in the
organic layer of the organic electroluminescence device according
to one aspect of the invention described above.
[0481] Therefore, structures, each substituent, and preparation
methods in other embodiments of the novel compound according to
this aspect are the same as those of the compound represented by
the formula (1-1) or (2-1) contained in the organic layer of the
organic electroluminescence device according to one aspect of the
invention. Furthermore, the same can be applied to the specific
examples of the compound represented by the formula (1-1) or
(2-1).
EXAMPLES
[0482] Next, the invention will be explained in more detail in
accordance with the following synthesis examples, examples, and
comparative examples, which should not be construed as limiting the
scope of the invention.
Example 1
(Fabrication of Organic EL Device)
[0483] A glass substrate of 25 mm by 75 mm by 1.1 mm thick with an
ITO transparent electrode (anode) (manufactured by GEOMATEC Co.,
Ltd.) was subjected to ultrasonic cleaning with isopropyl alcohol
for 5 minutes, and then subjected to UV-ozone cleaning for 30
minutes. The thickness of ITO was 130 nm.
[0484] The cleaned glass substrate with a transparent electrode was
mounted in a substrate holder of a vacuum vapor deposition
apparatus. First, compound HI was deposited on the surface where
the transparent electrode was formed so as to cover the transparent
electrode, thereby to form a compound HI film having a thickness of
5 nm. This HI film functioned as a hole-injecting layer.
[0485] Subsequent to the formation of the HI film, compound HT1 was
deposited to form an HT1 film in a thickness of 80 nm on the HI
film. This HT1 film functioned as a first hole-transporting
layer.
[0486] Subsequent to the formation of the HT1 film, compound HT2
was deposited to form an HT2 film in a thickness of 10 nm on the
HT1 film. This HT2 film functioned as a second hole-transporting
layer.
[0487] Compound BH-1 (host material) and compound BD-9 (dopant
material) were co-deposited on the HT2 film so that the ratio
(weight ratio) of compound BD-9 was 4% to form an emitting layer
having a thickness of 25 nm.
[0488] Compound HBL was deposited on the emitting layer to form an
electron-transporting layer having a thickness of 10 nm. Compound
ET (electron-transporting material) was deposited on the
electron-transporting layer to form an electron-injecting layer
having a thickness of 15 nm. LiF was deposited on the
electron-injecting layer to form a LiF film having a thickness of 1
nm. Al metal was deposited on the LiF film to form a metal cathode
having a thickness of 80 nm.
[0489] An organic EL device was thus fabricated. The compounds used
to fabricate the organic EL device are shown below.
##STR00407## ##STR00408##
(Evaluation of Organic EL Device)
[0490] The initial characteristics of the obtained organic EL
device were measured at room temperature at 10 mA/cm.sup.2 of DC
(direct current) constant current driving. The measurement results
of the voltage are shown in Table 1.
[0491] Furthermore, a voltage was applied to the organic EL device
so that the current density was 10 mA/cm.sup.2, and the EL emission
spectrum was measured using a spectroradiometer "CS-1000"
(manufactured by Konica Minolta, Inc.). The external quantum
efficiency (EQE) (%) was calculated from the resulting spectral
radiance spectrum. The results are shown in Table 1. The numerical
values in Table 1 are relative values with the values of
Comparative Examples 1, 2 and 3 being each taken to be 100%.
[0492] Further, a voltage was applied to the organic EL device so
that the current density was 50 mA/cm.sup.2, and the time (lifetime
LT95) until the luminance reached 95% with respect to the initial
luminance was measured. The results of the lifetime LT 95 are shown
in Table 1.
Examples 2 to 3 and Comparative Examples 1 to 3
[0493] Using combinations of the dopant materials and the host
materials shown in Table 1, organic EL devices were fabricated and
evaluated in the same manner as in Example 1. The results are shown
in Table 1.
[0494] The compounds used are shown below. Compound BD-9 was
synthesized by the method described below.
##STR00409##
TABLE-US-00001 TABLE 1 Driving Host Dopant voltage (V) EQ E (%)
LT95 (hr) Example 1 BH-1 BD-9 3.7 140 108 Comp. Ex. 1 BD-3 3.7 100
66 Example 2 BH-2 BD-9 3.3 147 102 Comp. Ex. 2 BD-3 3.3 100 75
Example 3 BH-3 BD-9 3.7 132 122 Comp. Ex. 3 BD-3 3.7 100 70
[0495] From the results shown in Table 1, it can be said that BD-9
was ring-fused, and hence, deactivation of excitons due to thermal
vibration of the compound was suppressed. As a result, the
stability of the compound also increased, so that the compound had
higher efficiency and longer life than those of BD-3.
Example 4
[0496] Compound 1 was synthesized by the following synthesis
route.
##STR00410##
Synthesis of Compound 1-1
[0497] Under an argon atmosphere, 3,6-di-tert-butylcarbazole
(11.2g, 40 mmol) was dissolved in chloroform (200 mL), and
n-bromosuccinimide (7.12 g) was added thereto, and the mixture was
stirred at room temperature for 5 hours. After completion of the
reaction, the solvent was concentrated, and the residues were
purified by column chromatography, whereby obtaining an amorphous
solid (14.4 g). The obtained solid was compound 1-1, which is an
intended product, and by mass spectrum analysis, it was confirmed
that it had an m/e value of 358 with respect to a molecular weight
of 358.
Synthesis of Compound 1-2
[0498] Under an argon atmosphere, compound 1-1 (14.4 g),
bis(pinacolato)diboron (15.2 g, 60 mmol, 1.5 eq.), PdCl.sub.2(dppf)
(1.46 g, 2.0 mmol, 5% Pd), and potassium acetate (7.85 g, 80 mmol)
were suspended in dioxane (200 mL), and the mixture was refluxed
for 7 hours. After completion of the reaction, the solvent was
concentrated by passing through short pass silica gel column
chromatography. The resulting solid was recrystallized from
hexane/ethyl acetate (9:1) to obtain a white solid (12.1 g, yield:
75%). The obtained solid was compound 1-2, which is an intended
product, and by mass spectrum analysis, it was confirmed that it
had an m/e value of 405 with respect to a molecular weight of
405.
Synthesis of Compound 1-3
[0499] Under an argon atmosphere, dibromodiiodobenzene (4.00 g,
8.20 mmol), compound 1-2 (6.81 g, 16.8 mmol, 1.05 eq.), and
Pd(PPh.sub.3).sub.4 (474 mg, 0.41 mmol, 5% Pd) were dissolved in
1,2-dimethoxyethane (800 mL) and water (200 mL) in which
K.sub.3PO.sub.4 (10.4 g, 49.2 mmol) was dissolved was added
thereto, and the mixture was stirred with heating at 50.degree. C.
for 24 hours. After completion of the reaction, extraction with
ethyl acetate was conducted, and the solvent was concentrated. The
resulting solid was purified by column chromatography, whereby
obtaining a white solid (5.0 g, yield: 77%). The obtained solid was
compound 1-3, which is an intended product, and by mass spectrum
analysis, it was confirmed that it had an m/e value of 790 with
respect to a molecular weight of 790.
Synthesis of Compound 1
[0500] Under an argon atmosphere, compound 1-3 (2.00 g),
Pd.sub.2(dba).sub.3 (232 mg), SPhos (415 mg), and NaOt-Bu (973 mg)
were suspended in xylene (200 mL), and the mixture was refluxed for
8 hours. After completion of the reaction, the resulting mixture
was purified by silica gel column chromatography, whereby obtaining
a yellow solid (450 mg, yield: 28%). The obtained solid was
compound 1, which is an intended product, and by mass spectrum
analysis, it was confirmed that it had an m/e value of 628 with
respect to a molecular weight of 628.
Example 5
[0501] Compound BD-4 was synthesized by the following synthesis
route.
##STR00411## ##STR00412##
Synthesis of Intermediate 1
[0502] Under an argon atmosphere, 2-iodonitrobenzene (9.7 g, 39
mmol), 5-bromo-2-methoxyphenylboronic acid (9.2 g, 40 mmol),
tetrakis(triphenylphosphine)palladium(0) (Pd (PPh.sub.3).sub.4, 1.1
g, 0.975 mmol),and K.sub.3PO.sub.4 (21 g, 97 mmol) was dissolved in
ethanol (95 mL), and the mixture was refluxed for 8 hours. After
completion of the reaction, the solvent was concentrated, and the
residues were purified by column chromatography, whereby obtaining
a yellow solid (8.8 g, yield: 73%). The obtained solid was
Intermediate 1, which is an intended product, and by mass spectrum
analysis, it was confirmed that it had an m/e value of 308 with
respect to a molecular weight of 308.
Synthesis of Intermediate 2
[0503] Intermediate 1 (7.00 g, 22.7 mmol) was dissolved in
o-dichlorobenzene (80 mL), triphenylphosphine (14.9 g, 56.8 mmol)
was added thereto, and the mixture was refluxed for 12 hours. After
completion of the reaction, the solvent was concentrated, and the
residues were purified by column chromatography, whereby obtaning a
white solid (5.7 g, yield: 78%). The obtained solid was
Intermediate 2, which is an intended product, and by mass spectrum
analysis, it was confirmed that it had an m/e value of 276 with
respect to a molecular weight of 276.
Synthesis of Intermediate 3
[0504] Under an argon atmosphere, Intermediate 2 (5.7 g, 21 mmol),
pinacolborane (7.9 g, 62 mmol), and
dichloro[1,1'-bis(diphenylphosphino)ferrocene]palladium
(PdCl2(dppf), 1.5 g, 2.0 mmol) was dissolved in dioxane (250 mL),
triethylamine (11.5 mL, 83 mmol) was added thereto, and the mixture
was refluxed for 5 hours. After completion of the reaction, the
solvent was concentrated, and the residues were purified by column
chromatography, whereby obtaining a yellow solid (5.0 g, yield:
75%). The obtained solid was Intermediate 3, which is an intended
product, and by mass spectrum analysis, it was confirmed that it
had an m/e value of 323 with respect to a molecular weight of
323.
Synthesis of Intermediate 4
[0505] Under an argon atmosphere, dibromodiiodobenzene (2.5 g, 5.1
mmol), Intermediate 3 (4.97 g, 15.4 mmol), and Pd(PPh.sub.3).sub.4
(237 mg, 0.205 mmol) were dissolved in toluene (250 mL) and
dimethylsulfoxide (DMSO, 50 mL), 2 M Na.sub.2CO.sub.3 aqueous
solution (13 mL) was added thereto, and the mixture was stirred
with heating at 90.degree. C. for 24 hours. After completion of the
reaction, toluene was removed under reduced pressure, and the
precipitated solid was filtered off. This solid was washed with
methanol and ethyl acetate, whereby obtaining a white solid (2.5 g,
yield: 75%). The obtained solid was Intermediate 4, which is an
intended product, and by mass spectrum analysis, it was confirmed
that it had an m/e value of 626 with respect to a molecular weight
of 626.
Synthesis of Intermediate 5
[0506] Under an argon atmosphere, Intermediate 4 (2.5 g, 3.99
mmol), Cul (76 mg, 0.40 mmol), L-proline (92 mg, 0.80 mmol), and
K.sub.2CO.sub.3(1.38 g, 10 mmol) were suspended in DMSO (80 mL),
and the mixture was stirred with heating at 150.degree. C. for 6
hours. After completion of the reaction, the precipitated solid was
filtered off. This solid was washed with methanol and ethyl
acetate, whereby obtaining a brown solid (1.4 g, yield: 75%). The
obtained solid was Intermediate 5, which is an intended product,
and by mass spectrum analysis, it was confirmed that it had an m/e
value of 464 with respect to a molecular weight of 464.
Synthesis of Intermediate 6
[0507] Intermediate 5 (1.4 g, 3.0 mmol) was dissolved in
dichloromethane (150 mL), dichloromethane solution of 1 M BBr.sub.3
(15 mL, 15 mmol) was added thereto, and the mixture was refluxed
for 8 hours. After completion of the reaction, ice water (50 mL)
was added, and the precipitate was filtered off. This solid was
washed with methanol, whereby obtaining a white solid (1.4 g). The
obtained solid was Intermediate 6, which is an intended product,
and by mass spectrum analysis, it was confirmed that it had an m/e
value of 436 with respect to a molecular weight of 436.
Synthesis of Intermediate 7
[0508] Intermediate 6 (1.4 g, 3.2 mmol) was suspended in
dichloromethane (75 mL) and pyridine (75 mL), anhydrous triflate
(3.8 mL, 22.5 mmol) was added thereto, and the mixture was stirred
for 8 hours. After completion of the reaction, water (50 mL) was
added, and the precipitate was filtered off. This solid was washed
with methanol and ethyl acetate, whereby obtaining a white solid
(1.8 g, yield: 72%). The obtained solid was Intermediate 7, which
is an intended product, and by mass spectrum analysis, it was
confirmed that it had an m/e value of 700 with respect to a
molecular weight of 700.
Synthesis of BD-4
[0509] Under an argon atmosphere, Intermediate 7 (1.00 g, 1.43
mmol), 4-iPr--N-phenylaniline (754 mg, 3.57 mmol),
tris(dibenzylideneacetone)dipalladium(0) (Pd.sub.2(dba).sub.3, 26
mg, 0.029 mmol), and
di-tert-butyl(1-methyl-2,2-diphenylcyclopropyl)phosphine (40 mg,
0.11 mmol) were dissolved in xylene (120 mL), tetrahydrofuran
solution of 1 M lithium bis(trimethylsilyl)amide (3.6 mL, 3.6 mmol)
was added thereto, and the mixture was refluxed for 8 hours.
[0510] After completion of the reaction, the mixture was filtered
through celite, and the solvent was distilled off. The obtained
solid was purified by column chromatography, whereby obtaining a
yellow solid (300 mg, yield: 26%). The obtained solid was BD-4,
which is an intended product, and by mass spectrum analysis, it was
confirmed that it had an m/e value of 823 with respect to a
molecular weight of 823.
Example 6
[0511] Compound BD-5 was synthesized by the following synthesis
route.
##STR00413##
Synthesis of BD-5
[0512] Under an argon atmosphere, Intermediate 7 (50 mg, 0.071
mmol), 2-biphenylboronic acid (113 mg, 0.571 mmol),
Pd.sub.2(dba).sub.3 (2.6 mg, 0.0028 mmol),
2-dicyclohexylphosphino-2',6'-dimethoxybiphenyl (SPhos, 4.7 mg,
0.011 mmol) and K.sub.3PO.sub.4 (151 mg, 0.714 mmol) were dissolved
in toluene (3 mL) and dioxane (3 mL) and the mixture was stirred
with heating at 90.degree. C. for 6 hours. After completion of the
reaction, heated chlorobenzene was added, the mixture was filtered
through celite, and the solvent was distilled off. The obtained
solid was washed with dimethoxyethane, whereby obtaining a yellow
solid (18.5 mg, yield: 37%). The obtained solid was BD-5, which is
an intended product, and by mass spectrum analysis, it was
confirmed that it had an m/e value of 708 with respect to a
molecular weight of 708.
Example 7
[0513] Compound BD-6 was synthesized by the following synthesis
route.
##STR00414##
Synthesis of Intermediate 8
[0514] Under an argon atmosphere, 2-chloroaniline (10.0 g, 46.2
mmol), 3-bromo-4-chlorobenzonitrile (5.89 g, 46.2 mmol),
(4,5-bis(diphenylphosphino)-9,9-dimethylxanthene)(allyl)palladium
chloride (352 mg, 0.462 mmol) and sodium tert-butoxide (4.44 g,
46.2 mmol) were suspended in dioxane (250 mL), and the mixture was
stirred with heating at 100.degree. C. for 8 hours. After
completion of the reaction, the mixture was filtered through celite
and the solvent was distilled off. The obtained residue was
purified by column chromatography, whereby obtaining a white solid
(6.8 g, yield: 56%). The obtained solid was Intermediate 8, which
is an intended product, and by mass spectrum analysis, it was
confirmed that it had an m/e value of 263 with respect to a
molecular weight of 263.
Synthesis of Intermediate 9
[0515] Under an argon atmosphere, Intermediate 8 (6.50 g, 24.7
mmol), palladium acetate (277 mg, 1.24 mmol),
tricyclohexylphosphonium tetrafluoroborate (910 mg, 2.47 mmol), and
potassium carbonate (K.sub.2CO.sub.3, 6.83 g, 49.4 mmol) were
suspended in N,N-dimethylacetamide (DMA, 250 mL), and the mixture
was stirred with heating at 140.degree. C. for 5 hours. After
completion of the reaction, the mixture was filtered through celite
and the solvent was distilled off. The obtained residue was
purified by column chromatography, whereby obtaining a white solid
(2.5 g, yield: 45%). The obtained solid was Intermediate 9, which
is an intended product, and by mass spectrum analysis, it was
confirmed that it had an m/e value of 226 with respect to a
molecular weight of 226.
Synthesis of Intermediate 10
[0516] Under an argon atmosphere, Intermediate 9 (1.30 g, 5.74
mmol), bis(pinacolato)diboron (2.91 g, 11.5 mmol),
Pd.sub.2(dba).sub.3 (105 mg, 0.115 mmol),
2-dicyclohexylphosphino-2',4',6'-triisopropylbiphenyl (XPhos, 0.219
g, 0.459 mmol) and potassium acetate (1.69 g, 17.2 mmol) were
dissolved in dioxane (250 mL), and the mixture was stirred with
heating at 100.degree. C. for 5 hours. After completion of the
reaction, the solvent was distilled off through a short pass column
chromatography, and the obtained residue was recrystallized with
hexane, whereby obtaining a white solid (1.52 g, yield: 83%). The
obtained solid was Intermediate 10, which is an intended product,
and by mass spectrum analysis, it was confirmed that it had an m/e
value of 318 with respect to a molecular weight of 318.
Synthesis of Intermediate 11
[0517] Under an argon atmosphere, dibromodiiodobenzene (400 mg,
0.820 mmol), Intermediate 10 (535 mg, 1.68 mmol),
Pd(PPh.sub.3).sub.4 (47 mg, 0.041 mmol) and potassium phosphate
(1.05 g, 4.92 mmol) were dissolved in dimethoxyethane (80 mL) and
water (20 mL), and the mixture was stirred with heating at
50.degree. C. for 24 hours. After completion of the reaction, the
precipitate was filtered off. This solid was washed with water and
methanol, whereby obtaining a white solid (365 mg, yield: 72%). The
obtained solid was Intermediate 11, which is an intended product,
and by mass spectrum analysis, it was confirmed that it had an m/e
value of 616 with respect to a molecular weight of 616.
Synthesis of BD-6
[0518] Under an argon atmosphere, Intermediate 11 (150 mg, 0.243
mmol), Cul (9 mg, 0.05 mmol), 1,10-phenanthroline monohydrate (48
mg, 0.24 mmol) and K.sub.2CO.sub.3 (135 mg, 0.974 mmol) were
suspended in dimethylsulfoxide (20 mL), and the mixture was stirred
with heating at 150.degree. C. for 8 hours. After completion of the
reaction, the precipitated solid was filtered off. This solid was
washed with methanol and ethyl acetate, whereby obtaining a yellow
solid (50 mg, yield: 45%). The obtained solid was BD-6, which is an
intended product, and by mass spectrum analysis, it was confirmed
that it had an m/e value of 454 with respect to a molecular weight
of 454.
Example 8
[0519] Compound GD-1 was synthesized by the following synthesis
route.
##STR00415##
Synthesis of Intermediate 12
[0520] Under an argon atmosphere,
2,6-dibromo-9,10-bis(2-naphthyl)anthracene (3.30 g, 5.61 mmol),
3,6-di-tert-butyl-1-chloro-9H-carbazole (3.70 g, 11.8 mmol),
palladium acetate (63 mg, 0.28 mmol), tri-tert-butylphosphonium
tetrafluoroborate (163 mg, 0.561 mmol) and sodium tert-butoxide
(2.16 g, 22.4 mmol) were suspended in toluene (80 mL), and the
mixture was stirred with heating at 100.degree. C. for 8 hours.
After completion of the reaction, the mixture was filtered through
celite and the solvent was distilled off. The obtained residue was
purified by column chromatography, whereby obtaining a yellow solid
(3.95 g, yield: 67%).
[0521] The obtained solid was Intermediate 12, which is an intended
product, and by mass spectrum analysis, it was confirmed that it
had an m/e value of 1054 with respect to a molecular weight of
1054.
Synthesis of GD-1
[0522] Under an argon atmosphere, Intermediate 12 (3.50 g, 3.32
mmol), palladium acetate (37 mg, 0.166 mmol),
tricyclohexylphosphonium tetrafluoroborate (122 mg, 0.332 mmol) and
potassium carbonate (1.84 g, 13.3 mmol) was suspended in
N,N-dimethylacetamide (170 mL), and the mixture was stirred with
heating at 140.degree. C. for 8 hours. After completion of the
reaction, the precipitate was filtered off. This solid was washed
with heated chlorobenzene, whereby obtaining an orange solid (2.1
g, yield: 65%). The obtained solid was GD-1, which is an intended
product, and by mass spectrum analysis, it was confirmed that it
had an m/e value of 981 with respect to a molecular weight of
981.
Example 9
[0523] Compound BD-7 was synthesized by the following synthesis
route.
##STR00416##
Synthesis of Intermediate 13
[0524] 7-Bromo-1H-indole (10.0 g, 51.0 mmol) and benzaldehyde (5.41
g, 51.0 mmol) were dissolved in acetonitrile (200 mL), 57%
hydroiodic acid (2 mL) was added dropwise with stirring, and the
mixture was stirred with heating at 80.degree. C. for 8 hours.
After completion of the reaction, the precipitated solid was
filtered off and washed with acetonitrile, whereby obtaining a
pale-yellow solid (4.60 g, yield: 32%). The obtained solid was
Intermediate 13, which is an intended product, and by mass spectrum
analysis, it was confirmed that it had an m/e value of 568 with
respect to a molecular weight of 568.
Synthesis of Intermediate 14
[0525] Intermediate 13 (4.50 g, 7.92 mmol) was suspended in
acetonitrile and 2,3-dichloro-5,6-dicyano-p-benzoquinone (DDQ, 4.49
g, 19.8 mmol) was added with stirring, and the mixture was stirred
with heating at 80.degree. C. for 6 hours. After completion of the
reaction, the precipitate was filtered off. This solid was washed
with acetonitrile, whereby obtaining a yellow solid (4.02 g, yield:
90%). The obtained solid was Intermediate 14, which is an intended
product, and by mass spectrum analysis, it was confirmed that it
had an m/e value of 566 with respect to a molecular weight of
566.
Synthesis of Intermediate 15
[0526] Under an argon atmosphere, Intermediate 14 (1.50 g, 2.65
mmol), 2-chlorophenylboronic acid (1.24 g, 7.95 mmol),
Pd(PPh.sub.3).sub.4 (153 mg, 0.132 mmol) and potassium carbonate
(2.20 g, 15.9 mmol) were dissolved in dimethoxyethane (20 mL) and
water (5 mL), and the mixture was stirred with heating at
80.degree. C. for 8 hours. After completion of the reaction, the
precipitate was filtered off. This solid was suspended in toluene
with heating and washed, whereby obtaining a pale-yellow solid
(1.00 g, yield: 60%). The obtained solid was Intermediate 15, which
is an intended product, and by mass spectrum analysis, it was
confirmed that it had an m/e value of 629 with respect to a
molecular weight of 629.
Synthesis of BD-7
[0527] Under an argon atmosphere, Intermediate 15 (900 mg, 1.43
mmol), Cul (136 mg, 0.715 mmol), 1,10-phenanthroline monohydrate
(142 mg, 0.715 mmol) and K.sub.2CO.sub.3 (790 mg, 5.72 mmol) were
suspended in N,N-dimethylformamide (30 mL), and the mixture was
stirred with heating at 150.degree. C. for 8 hours. After
completion of the reaction, short pass column chromatography was
carried out. After distilling off the solvent, the obtained solid
was recrystallized with cyclohexanone, whereby obtaining a yellow
solid (505 mg, yield: 63%).
[0528] The obtained solid was BD-7, which is an intended product,
and by mass spectrum analysis, it was confirmed that it had an m/e
value of 556 with respect to a molecular weight of 556.
Example 10
[0529] Compound BD-8 was synthesized by the following synthesis
route.
##STR00417## ##STR00418##
Synthesis of Intermediate 16
[0530] 3,6-di-tert-butyl-9H-carbazole (15.0 g, 53.7 mmol),
1-bromo-2-fluorobenzene (18.8 g, 107 mmol) and cesium carbonate
(35.0 g, 107 mmol) were suspended in N-dimethylformamide (190 mL),
and the mixture was stirred with heating at 150.degree. C. for 22
hours. After completion of the reaction, water was added and the
precipitate was filtered off. This solid was purified by column
chromatography, whereby obtaining a white solid (21.7 g, yield:
93%). The obtained solid was Intermediate 16, which is an intended
product, and by mass spectrum analysis, it was confirmed that it
had an m/e value of 434 with respect to a molecular weight of
434.
Synthesis of Intermediate 17
[0531] Under an argon atmosphere, Intermediate 16 (21.7 g, 50.0
mmol),
allylchloro[1,3-bis(2,6-diisopropylphenyl)imidazol-2-ylidene]palladium
(570 mg, 0.996 mmol) and potassium carbonate (13.8 g, 100 mmol) was
suspended in N,N-dimethylacetamide (250 mL), and the mixture was
stirred with heating at 130.degree. C. for 11 hours. After
completion of the reaction, water was added and the precipitate was
filtered off. This solid was purified by column chromatography,
whereby obtaining a white solid (15.5 g, yield: 88%). The obtained
solid was Intermediate 17, which is an intended product, and by
mass spectrum analysis, it was confirmed that it had an m/e value
of 353 with respect to a molecular weight of 353.
Synthesis of Intermediate 18
[0532] Intermediate 17 (4.10 g, 11.6 mmol) was dissolved in
N,N-dimethylformamide, N-bromosuccinimide (NBS, 2.20 g, 12.36 mmol)
was added with stirring, and the mixture was stirred at room
temperature for 10 hours. After completion of the reaction, the
precipitate was filtered off. This solid was purified by column
chromatography, whereby obtaining a white solid (4.87 g, yield:
97%). The obtained solid was Intermediate 18, which is an intended
product, and by mass spectrum analysis, it was confirmed that it
had an m/e value of 432 with respect to a molecular weight of
432.
Synthesis of Intermediate 19
[0533] 2,2,6,6-tetramethylpiperidine (3.20 g, 22.7 mmol) was
dissolved in tetrahydrofuran, and n-butyllithium hexane solution
(1.55 M, 14.6 mL) was added with stirring at -50.degree. C. to
obtain lithium tetramethylpiperidide (LiTMP). After stirring at the
same temperature for 20 minutes, it was cooled to -73.degree. C.
and triisopropyl borate (8.00 mL, 34.7 mmol) was added. After
stirring this solution for 5 minutes, a tetrahydrofuran solution of
Intermediate 18 (4.83 g, 11.2 mmol) (30 mL) was added dropwise.
After stirring for 10 hours while gradually raising the temperature
to room temperature, 10% hydrochloric acid (100 mL) was added and
the mixture was stirred for 30 minutes. After the completion of the
reaction, ethyl acetate was added for extraction, and the organic
layer was collected and the solvent was distilled off. The obtained
residues were purified by column chromatography, whereby obtaining
a yellow solid (3.62 g, yield: 68%). The obtained solid was
Intermediate 19, which is an intended product, and by mass spectrum
analysis, it was confirmed that it had an m/e value of 476 with
respect to a molecular weight of 476.
Synthesis of Intermediate 20
[0534] Under an argon atmosphere, 4-tert-butyl-2,6-diiodoaniline
(1.39 g, 3.47 mmol), Intermediate 19 (3.62 g, 7.60 mmol),
Pd(PPh.sub.3).sub.4 (400 mg, 0.346 mmol) and sodium bicarbonate
(2.30 g, 27.4 mmol) were dissolved in dimethoxyethane (50 mL) and
water (25 mL), and the mixture was stirred with heating at
80.degree. C. for 10 hours. After completion of the reaction, the
mixture was extracted with methylene chloride, and the organic
layer was dried with magnesium sulfate. The solid was removed by
filtration, and the solvent was distilled off. The obtained residue
was purified by column chromatography, whereby obtaining a yellow
solid (2.41 g, yield: 69%). The obtained solid was Intermediate 20,
which is an intended product, and by mass spectrum analysis, it was
confirmed that it had an m/e value of 1010 with respect to a
molecular weight of 1010.
Synthesis of BD-8
[0535] Under an argon atmosphere, Intermediate 20 (2.41 g, 2.39
mmol), Pd.sub.2(dba).sub.3 (90 mg, 0.098 mmol), SPhos (16 mg, 0.39
mmol) and cesium carbonate (4.7 g, 14.4 mmol) was suspended in
xylene (240 mL), and the mixture was stirred with heating at
140.degree. C. for 10 hours. After completion of the reaction, the
precipitated solid was filtered off and washed with water and
methanol. This solid was purified by column chromatography, whereby
obtaining a yellow solid (1.24 g, yield: 61%). The obtained solid
was BD-8, which is an intended product, and by mass spectrum
analysis, it was confirmed that it had an m/e value of 848 with
respect to a molecular weight of 848.
Example 11
[0536] Compound BD-9 was synthesized by the following synthesis
route.
##STR00419##
Synthesis of Intermediate 21
[0537] Under an argon atmosphere, 1-bromo-2-chloro-4-iodobenzene
(17.0 g, 53.6 mmol), diphenyl amine (9.07 g, 53.6 mmol),
Pd.sub.2(dba).sub.3 (981 mg, 1.07 mmol),
4,5'-bis(diphenylphosphino)-9,9'-dimethylxanthene (XantPhos, 1.24
g, 2.14 mmol), and NaOt-Bu (5.15 g, 53.6 mmol) were refluxed in
toluene (500 mL) for 8 hours. After completion of the reaction, the
mixture was filtered through celite, and concentrated. The obtained
residue was purified by silica gel column chromatography, whereby a
white solid was obtained (13.6 g, yield: 71%). The obtained solid
was Intermediate 21, which is an intended product, and by mass
spectrum analysis, it was confirmed that it had an m/e value of 359
with respect to a molecular weight of 358.6.
Synthesis of Intermediate 22
[0538] Under an argon atmosphere, Intermediate 21 (13.6 g, 38.0
mmol), bis(pinacolato)diboron (19.3 g, 76.0 mmol), PdCl.sub.2(dppf)
(621 mg, 0.761 mmol), and potassium acetate (7.46 g, 76 mmol) were
suspended in dioxane (400 mL) and refluxed for 7 hours. After
completion of the reaction, the solvent was concentrated by passing
through short pass silica gel column chromatography. The obtained
solid was washed with methanol, whereby a white solid was obtained
(18.5 mg, yield: 71%). The obtained solid was Intermediate 22,
which is an intended product, and by mass spectrum analysis, it was
confirmed that it had an m/e value of 406 with respect to a
molecular weight of 405.7.
Synthesis of Intermediate 23
[0539] Under an argon atmosphere, dibromo-modification
(Intermediate 14) (5.00 g, 8.83 mmol), a boronic acid ester
(Intermediate 22) (10.8 g, 26.5 mmol), and Pd(PPh.sub.3).sub.4
(1.02 g, 0.883 mmol) were dissolved in toluene (250 mL) and
dimethylsulfoxide (500 mL), and 2M Na.sub.2CO.sub.3 (130 mL) was
added thereto, and the mixture was stirred with heating at
100.degree. C. for 6 hours. After completion of the reaction, the
solvent was concentrated by passing through short pass silica gel
column chromatography. The obtained residue was washed with ethyl
acetate and toluene, whereby a yellow solid was obtained (6.39 g,
yield: 75%). The obtained solid was Intermediate 23, which is an
intended product, and by mass spectrum analysis, it was confirmed
that it had an m/e value of 965 with respect to a molecular weight
of 964.0.
Synthesis of BD-9
[0540] Under argon atmosphere, Intermediate 23 (6.24 g, 6.47 mmol),
copper(I) iodide (1.48 g, 7.77 mmol), 1,10-phenanthroline (1.40 g,
7.77 mmol), and potassium carbonate (7.16 g, 51.8 mmol) were
suspended in N,N-dimethylacetamide (1.2 L), and the mixture was
stirred with heating at 120.degree. C. for 15 hours. After
completion of the reaction, the solvent was concentrated by passing
through short pass silica gel column chromatography. The obtained
residue was recrystallized with chlorobenzene and washed with
toluene and methanol, whereby a yellow solid was obtained (4.54 g,
yield: 79%). The obtained solid was BD-9, which is an intended
product, and by mass spectrum analysis, it was confirmed that it
had an m/e value of 892 with respect to a molecular weight of
891.1.
EXPLANATION OF NUMERICAL SYMBOLS
[0541] 1,11 Organic EL device [0542] 2 Substrate [0543] 3 Anode
[0544] 4 Cathode [0545] 5 Emitting layer [0546] 6 Hole-transporting
zone (hole-injecting layer, hole-transporting layer, etc.) [0547]
6a First hole-transporting layer [0548] 6b Second hole-transporting
layer [0549] 7 Electron-transporting zone (electron-injecting
layer, electron-transporting layer, etc.) [0550] 7a First
electron-transporting layer [0551] 7b Second electron-transporting
layer [0552] 10,20 Emitting unit (organic layer)
* * * * *